Holy Swordsman is the best.
That goes without saying.

I've been coming to appreciate the Samurai more and more. I've found that since this time I've been pumping Brave and Faith to good levels, my Samurai does pretty good damage with her Draw Outs, and with the A Save ability she can get pretty strong pretty fast, since she's so durable that she can take a good deal of hits. Plus she can Draw Out to heal a good amount of damage which is always helpful, plus I can get free Job Points and Experience points Drawing Out just to add Shell and Protect (I'm anal about the saying "Any turn waited is a wasted turn"). The Samurai's advantage over the monk is that the Samurai doesn't need to be on level ground to heal others, plus a wider range and (in my case at least) to a higher amount. The trade off is that they can't revive, nor can they heal MP, but I have a summoner with white magic and insanely high Faith to cover that anyways.

And as far as the Samurai's breaking swords, I haven't had that happen to me often, and since I am an item-hoarder anyways it's not that big a deal, I'm the type of person to max out all the items I need (and sometimes those I don't, just in case).

This being said though, I really like my Ramza Squire with Math Skills. Scream up then calculate the crap out of the enemies.