I've had the Sony for about 2months. Can't comment on playback on set top units or PS2 but I'm impressed with thte DVD+R/RW format, formatting is quick and I havn't had any new coasters from this drive yet.
It is the only single drive unit for both DVD formats so should be the most compatable with DVD players. I think it is a bargin for £250UKP that I paid and it now writes at 4x on DVD-R+R with a firmware update.
I say, dive in and get one before they go out of stock again, although prices are dropping fast.
Cheers
Cris.
PS - The Sony looks really cool if you have an Ali case or a Shuttle cube like me.