I have no problem stripping drm off books I have purchased, but library books? For me that is too far. I guess it all depends on what you feel is right.
I am in Canada and I have a Barnes & Noble Nook (classic) and a B&N Nook Color. And I am getting the newest Nook Touch in a couple weeks and selling my classic Nook. They don't ship to Canada though and you need to register with a US address to buy all of the books available. You can use epub library books easily or buy from the Sony store, Kobo, or any other place that sells adobe drm epubs (and any drm free epub of course). The shipping and address is very easy to get around (if you want more info on that go to
this or just ask), and there are places you can buy them and have them shipped to you, like ebay.
If I couldn't get a Nook I would probably go with the Kobo touch. Nice and light, and you can use adobe epubs or library epubs on the device. I haven't actually played yet with it, but I have watched a lot of videos and I still don't like a few things about the Kobos (like search ability and dictionary support), it is also very slow. Besides that, they are fairly cheap and available at your local Chapters. The Kobo store usually has good coupons, but I find their selection to be lacking.
Sony's are nice, but a bit pricey. If you have no problem with stripping all of your non-amazon ebooks, then the Kindle is nice too.
The Nook, Kobo, and Kindle are all very easy to download books from and sync your library. My Nook takes seconds and I can open a newly purchased book. Not sure about a adapter for the UK. You will probably have to purchase one separately. I am not sure about the others, but my Nooks came with a usb cord and a wall adapter. You can still read on the Nook while it is charging, but I don't think you can on the Kindle (or at least you couldn't before, maybe somebody can chime in on this).
I would go to youtube and watch the videos on whichever devices you like the best. Get to know them more and go into the forums here for each individual device to see how people that have them like them.