Whoa, it's been this long and no answers :0
I've got the one with 560M. I got it because of the 2x graphics speed compared to other options. Photoshop and other 3D programs run very smoothly without stuttering. I didn't have a chance to try the units anywhere prior to buying so I wanted to be on the safe side considering the prices - I don't know if there's a real-world difference between these.
Hmm.. the battery life is around 4 hours - maybe 5 with minimum settings - with standard use, probably wifi off - so it's a bit more power hungry. It doesn't get hot at all, contrary to some posts you can find around the net. The fan might run most of the time, but to be honest, I really don't even hear it. (ok I can hear it if I start to listen)
Re: express cards, I just posted a question about them in the Lenovo Community forums: http://forums.lenovo.com/t5/X-Series...ns/td-p/460299