ff5 did very little for me.. more than 12 and x-2. They were plain bad.
But i think its the job system that doesnt appeal to me. I like in IX how they have like a set specialty and it reflects the kind of character they are as well.
In terms of customisable goodness. ff10 did a really good job. the sphere grid gives characters specialties but lets you chnage it if u really want.
anyway.. just replayed MGS4. Love it. as well as ff6/ff7/ff8.
and am replaying ff9 now.
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Machine Specs:
Enermax Galaxy 1000w PSU, Asus Striker II Formula Motherboard, Intel Quad-core Q6600 @ 3.15ghz, Nvidia Geforce 9800GX2, 2gb Adata Extreme DDR1066