I really enjoy psi melee. I started my toon as psi/ice, then switched to psi/fire, then psi/elect, then back to psi/ice, then psi/inv, and finally settled on psi/wp.
I am happy with the toon. I think greater psi blade is really powerful and mass levitate is a lot of fun.
Dont let anyone try to tell you a set is no good, cause I avoided claws forever and finally made a claw/wp brute and he is 1 of my favs now.