Basically the PC version is similiar to the PSX version... but the drawbacks of the PC version are Bugs, crashes and the keyboard control just isn't the same with the PSX's controller... Remember running away from battles by holding down R1+R2+L1+L2? It felt so good back then. Also, the PC version uses MIDI music. No sephiroth's choir theme :isee:
On the other hand, there are patches (1.02 is the official), but the higher resolution patch didn't work for me. Ultimately, if you're a hardcore FF7 fan, you won't mind the controls @ the MIDI music cause it's still FF7.