MSD ?
Fighter gives me a skad of bonus feats, and a better BAB. Those bonus feats will allow me to get exalted earlier on in the "character remake" progression by focusing my 1st and third level feat on sacred vow and vop. That will open up more damage to evil abilities for my unarmed strike. So I'ld literally be a "holy terror" on the battle field.
Sorceror won't get me into VoP earlier (so no bonus exalted feats til 12th) which will net me 5 exalted feats by 20th which frankly won't put me where I want to be on the exalted progression. It does however give me mage armor, cats grace, bulls strength, improved invisibility, true strike, and I am sure a few other things. Another perk to sorceror is the current party sorceror is usually a non-threat to the enemies by 11pm
Cleric for RP reasons would have to be a cleric of Ilmater likely with the strength and suffering domains. The healing is good, but with a cleric of kelemvor, and a healing psion in the party isn't really needed. The psychic warrior is pretty much set on druid so he'll be bringing healing in as well, and the paladin of Lathander is likely to pick Cleric of Lathander as hers as well.
All that said I guess the one thing keeping me from making the choice I likely "should" make is I HATE CASTING. but I think it is needed in this case.
I am likely going to end up stating all three out. We have a character revamping session for most of us tonight (in about 13 hours actually.)