[mgmueller]

To describe again: 10.1v is the "original one", introduced before iPad2.
Seeing iPad2, Samsung decided to streamline the unit: Lower res. camera, slightly less weight and depth. This redesigned unit they called 10.1 (without the "v").

I went for the 10.1v specifically, after I've read the 10.1 would be "flimsy". Other users, after hearing about this background of my decision state, their 10.1 is NOT flimsy.
I can't tell, haven't seen the 10.1.
But I'll check the 8.9, which should have the same design as 10.1 (without "v") in 2 or 3 weeks (not deliverable yet in Germany).

Anyway...
To start with the conclusion:
If I'd have to decide for a single Android tablet, it probably would be Samsung Galaxy Tab 10.1v.
There's no significant advantage to Motorola Xoom for example, but it has some minor advantages.
So my ranking of my Honeycomb tablets:
#1 = Samsung Galaxy Tab 10.1v
#2 = Motorola Xoom (not far behind #1)
#3 = Asus Ee PAd Transformer (with significant distance to Motorola Xoom)
#4 = Acer Iconia
I don't use the older Android tablets (Dell Streak, Samsung Galaxy Tab 7") anymore. They feel somewhat dated. Maybe if they allow for Honeycomb...
I still love my BlackBerry PlayBook and HP TouchPad and of course iPad2.

But for now, I'll only compare the Honeycomb tablets.

Design and "touch and feel":
Motorola Xoom feels a bit and looks a lot more "valuable" than Samsung Galaxy Tab 10.1v.
Acer Iconia and Asus Eee Pad Transformer are about even and far behind both others. They both feel a bit like "low budget" units. And actually they are significantly cheaper. So a comparison considering the price would be more in their favor.

Form factor:
They all are about the same size and go for 16:9 (or something in that range) instead of iPad's 4:3.
For whatever reason (the measurements and weight aren't that different), Motorola Xoom seems (way) more bulky than the others.
Samsung 10.1v (they've changed that on the 10.1 [without "v"] as far as I can tell from the product pictures to a more iPad-like back) has a very "cleverly" designed back. The middle part in a circular form is "bend inwards" (sorry, don't know how to phrase it differently).
This makes Samsung look even more "fragile". Not in the sense it may brake any time soon. But in the sense to make it seem less bulky, obstrusive, rigid, blocky, ...
I find this very smart and kind of outstanding from the masses of tablets.

Build quality:
Samsung Galaxy Tab 10.1v feels the lightest, but the most "plasticky".
It doesn't feel cheap, but still a bit less valuable than Xoom or iPad.
Still: If I use a "big Android tablet", I see myself reading on Tab 10.1v, certainly less frequent on Xoom.

Display quality:
I've read, the display would "kill them all", including iPad2.
Does 10.1 (without the "v") have another display? I don't think so, haven't read anything like that.
If I use 10.1v, I don't see the huge difference.
It seems a bit sharper than iPad2 and Xoom seems even a bit less sharp than iPad2. But it's really just nuances.
Would I use any of these units isolated on its own, I wouldn't think a second about the display quality on any of these.
Maybe that's because I'm used to reading on PDAs and such in the past and don't look that carefully.
I'll do a 1:1 comparison later on. But for now my statement:
Samsung seems to have the best display, but it's only minor differences.

Honeycomb experience:
Something new happened.
I don't know why I didn't have this with Acer Iconia or Asus Eee Pad transformer:
I'm using the same Google account on all Android tablets.
I configure all of them to sync.
In the Android market, I see the same purchased apps for all units.
But on Galaxy Tab 10.1v, they synced automatically.
Meaning: All apps (about 150 for now) installed themselves automatically in a single instance right after setup.
I was surprised, but I like it.
I'd prefer, if even the links on the desktop would be arranged the same.
But I guess, that's an "exotic" demand. Most users will use a single tablet and won't even realise the syncing.
Still: Very nice and in such details I see the (positive) differences to iOS.

Usability:
I don't feel any differences in performance.
But I very much care about weight and battery duration.
About the battery I can't tell yet. But the data indicates, Samsung should perform great.
About the weight, it's easy.
I can't use Xoom or iPad for extensive reading sessions. I usually hold my tablet in one hand and read in portrait. iPad 4:3 means a longer lever and my arm tires quickly (45 minutes or so and it starts getting uncomfortable). Acer and Asus feel great, but they simply don't have the "me likey" cool for me. Xoom feels more heavy and bulky than the other Honeycombs.
So, if I use a Honeycomb tablet for reading, it definitely will be Galaxy Tab 10.1v.
But actually, for now I'll probably stick to BlackBerry PlayBook for reading. 7" is more than enough for me and it feels perfect for reading.

iOS vs. Honeycomb:
Totally subjective of course.
I admire both companies, they both have a great and successful and unique business model.
But somehow I prefer Android. I liked 2.2 already, but Honeycomb really is a quantum leap.
To me, the description would be:
If my mother would need a tablet, I'd recommend iOS. It works great "out of the box", it's intuitive, beautiful and easy.
But for the more experienced users (and especially for the "freaks"), "easy" of iOS quickly can become "simplistic".
Personally, I like to experiment. To test and configure - even more than actually to use. (That's probably the reason for buying more than 1 or 2 units).
And this simply is way more fun, open and flexible on Android than on iOS.
I'll certainly go for iPad3 (and even iPhone5, as my contract duration ends in 6 months and I can have it for a low price). But Android and Google "have a special place in my heart"...