My favorite pt so far has been:

Pld/War (me)
Nin/War
Blm/Whm
Blm/Whm
Sum/Blm
Sum/Whm

This party was around levels 42-45 (cant remember exactly). We were in the crawlers nest and killing things VERY fast! I leveled up twice in alittle less than 3 hours. Well, I also had my band left over from the previous day so I got about an extra 500-700 xp total, on top of recasting my band