I'm torn. I used to want the all-in-one solution like the PSX. It would give me a lot more room in my entertainment center for disc storage. But since I already have 4 DVD players (5 if you count the PS2), a Sony home theatre system, and a new PC, I don't really need anything except a box that plays games. Maybe in another 10 years when I want to replace everything would I think about an 'everything box'. But THAT box must have digital VCR functions, and DVD-R burning. Something they've taken out of the PSX because of cost.
I also like to take a system with me on vacation and to family gatherings so I wouldn't want to schlep an $800 box with me with the chance of it breaking.