Well, my new found addiction meant I couldn't resist, so I got myself a T8.
Now these are my very early impressions - I have a 767 and RM970.
Firstly, its form factor is much better than the 767 - I could actually foresee having this in my pocket, although it would still be bulky.
The interface is quite clean, and the touch sensitivity works pretty well, but could be more sensitive - may just take time to get used to, or indeed may have been tweaked in a firmware revision - I might add that I have no idea where I'll find firmware upgrades as I can't read Chinese (any assistance would be appreciated if anyone can give me a link!).
I threw an unconverted Seinfeld, and it was out of sync. I threw some converted moveis (video bitrate around 800), and it played beautifully - reasonable sound from the two stereo speakers built in, although at max volume, there was slight distortion. I was able to fast forward to any spot and lip sync was retained.
Now changing the aspect ratio is another story - I can't read the manual, but there seemed to an icon relating to stretching or reducing the screen when first playing a file - sadly, that didn't work (the 767 does an excellent job with that stuff). May well be a bug in the firmware I am guessing, which will hopefully be fixed.
All in all, very good first impression save for what I expect are minor firmware bugs - I think this player has great potential and would be my pick of the current 4.3 inchers.
Will pop back again when I've had a chance to do more testing (lousy study and work will get in the way however!