Done Deal in general is doing the most for The Bay as a whole, although I think if he keeps making dope CDs, Messy Marv could potentially be a "mover" as well. He has the talent and personality, IMHO.
The Figg working with Xzibit definitely has possibilities--IF JT lets X be himself (i.e. 40 DAYS AND 40 NIGHTS). I mean, RESTLESS and MAN VS. MACHINE both had some tight cuts, but you could kind of tell from listening to them that X had sacrificed some of his rhyme skills just to sell...if it's independent shit, though, it ought to be dope.
As for Cellski--he's just a workaholic who doesn't stop moving. He probably couldn't make a bad CD if he tried. PEACE!