Zinio is already known for the very good price for digital magazines. But the desktop programs are far from perfect. Very slow, and resource hungry.
They have an ipad app too, which wasn't working very well. It took 2-3 seconds to render a page. This week there was an update which minimized to rendering process making the app very usable. (there are still some quirks)
But the quality is sooooo good. I have a paper subscription of national geographics. Great pictures, but on paper it isn't really good, you get an ugly fold in the middle which reflects light.
On the ipad it looks superb, text are crisp and sharp, but the photo's... wow
This one is in landscape (2 pages at once). I'm staring at the screen much longer than I'd read the paper version. It looks so stunning.