I think it's going to be the Sony PRS-600. I really like the dictionary feature, plus the touch screen. Up until now I've been used to reading my ebooks on my iPhone and thusly I am also used to flicking pages with my fingers.
The Opus also looks promising as far as functionality is concerned, but I think the Sony wins it. I also like the way the Sony looks I guess. Better than the Opus.
Ah well, seems I will have to strip my former eBooks. Luckily it's no more than ten I think. I'm just not a stickler for going the illegal way - but all these formats and the geographical restrictions are really annoying. While I can buy a lot of what I want in the european online bookstores, most of the fantasy I read is only available at say Fictionwise or BooksonBoard. Which I can't buy (legally) because I am not a US resident.
Right now I feel that all these restrictions drive people who want to be on the right side of the law into illegality nonetheless. It's really frustrating