I have to say my favorite is "Final Fantasy VII". There are just so many things in the game that impressed me back then. In my eyes, it was superior to every rpg I'd ever played back then. I remember that I never had any complaints about anything in that game. Sure, there were some "typos" and "mistranslations", but everything else was done so well that it never phased me.
I was so jealous that my friend was able to take vacation time when FF7 was released. But, at least I had something to look forward to when I got out of work.
I really haven't played alot of RPGs but i do like a few Final Fantasy games. I loved 7, 8 and 10 just about equally. I haven't been able to get into any of the other ones. Those ones sucked me in from the beginning.