Heh, I never knew about GoGo's sweet command customization for months either...and now, he's ALWAYS in my party.(Tools/Control/Magic, you can't go wrong!)
Well, anyway...
Sabin - I just...LIKED Sabin for some reason...he's just, you know, cool. Genji Glove/Offering is teh fun.
Cayenne - Nice character who interacts well with Sabin(on a plot level), as opposed to the random party members who don't know anyone.(IE-Shadow, Gau, Celes and Mog, or something) I always put the Black Belt on him, so he gets a chance to use his sword because I'm never NOT using Sword Techniques.
GoGo - Why bother with Relm and Edgar when you get both?Although next game I'm thinking of using Edgar more and GoGo less.
Mog/Shadow - Shadow's not really all that great compared to others, but he's a NINJA. Shwa! And Mog has cool dances and the hella useful Moogle Charm.
