Okay here's the deal

My party's at lvl 40-41, and I've done prettymuch every sidequest.

I can beat X-Death fine, but I always get screwed over by Neo X-Death.

Also, I'd level up, but I can't find any monsters that have more than like 1000 exp.

Does anybody know any sure-fire ways I can beat him at the level I'm on, or any easily accessable places from the world map I can level up on?

thanks