I've just exchanged my 3rd unit at Curry's due to horrendously patchy light bleed on the screens.
I think that they either had a poor batch or that Asus's QC needs improving...or both. Although the light bleed isn't a big issue (even bad examples) in everyday use, I found it to be very distracting when watching films or with apps with a black background.
Curry's were great though, i'll give them their due. The took one look at each, agreed on the spot and replaced it. No hassle.
I was updating from a TouchPad, and actually found the TF300 very thin to hold comfortably in large hangs! The screen was bright enough (just) and colours were not overly saturated, for better or worse. Overall the unit was adequately robust. But i prefer a more substantially constructed tablet: ie TouchPad, Prime, iPad, Acer 510 etc...
I found that the battery life of the tablet alone, was less that my HP TouchPad but the combined Tab & Dock was a couple of hours more. The connectivity of this tablet is killer. Fantastic. Full SD and full USB support on the dock and MSD support on the tab means that you can have a 96GB Tablet with a 64GB MicroSD card and 32 on board, and have 128GB SD card in the dock with USB support for HDD's, DVD players, USB->Ethernet adapters etc...
Ultimately though, I have now decided that Android is a perfect phone OS and not so great tablet OS. I've been running an SGS2 for ages and love it. Sadly the Android experience on this tablet just didn't do it for me. I think it's more to do with the way I expect to use a tablet versus a phone and also the hardware implementation. I've decided to run the Android phone along side a jailbroken iPad.
Anyway, it's a fantastic little tablet that really is a jack of all trades.