I just bought a Kobo Touch last weekend from Borders (20% off - I couldn't resist).
It's my first eInk device and I'm really enjoying it. I even blogged about it
here.
The gist of my review is that it's a great little device but it could use collections and multiple bookmarks. I'm also disappointed in its treatment of sideloaded content (hyperlinks don't work).
That said, I like the interface and it's great to read on. I think the issues are minor and I'm hoping they get fixed soon (the devs seem to be on top of things). It's really a great device.