hmmm, at this level i found it really hard to find a good zone to xp because the xp drops off at very inconvenient levels. I usually did Quicksands from 45-46(47) then did rumble crawlers to 48-49 i think xp gets bad at 49. Then you can either go to garlaige or quicksands in west altepa. When i leveled my bard i did quicksands and on my whm i did garlaige and to do garlaige at 48-49 you need a really good party. mine was nin, 2x rng whm,brd, blm and that is probably the reason it was good, i dont think a paladin could have been so successful at that level in garlaige. quicksands however is very nice for a paladin. After that people do kuftal but i liked the helm beetles in C nest till 54-55 because crabs suck. also at 53-54 you can do spiders in boyahda. then its more crabs and crap although king ranps tomb is an alternative from 53-56 i hear.