1. FFVI OST (Just my fave)
2. FFVII OST (FF7 or not, still nicely done)
3. FFIV OST (Old and retro but has the most... busi..est... hmm..)

Those are my top 3 OST's -but- I like to stray out.

1. FFIV Piano Collections (This surprised me)
2. FFVI Piano Collections (This surprised me more. *looks up at FFIV*)
3. FFV Piano Collections (I don't know how this one got in there...)

then.. for random

1. FFVI Grand Finale (The version of The Phantom Train, Gau, Terra's theme, and Martial Law is great. And of Course... Aria de mezzo carerette (sp) )
2. Final Fantasy Pray (I had this on my computer waaaay long ago, Love it.)
3. Final Fantasy Concert 2002.02.20 (Listening to it now. xD)
and to throw this in here..
4. Final Fantasy VII: DoC Ost (It sounds like music I'd play in a high school band. )

That's it for me. ^^