I am going to build my rig for scrypt mining. I have two different plans.   

Rig 1: 4 GPU (600kh each GPU)
Rig 2: 6 GPU (400kh each GPU)

I am wondering which rig is more efficient for solo mining and pool mining even both of them have same hash in total.

You only get less than 50% coins of you mined in this pool.
This pool is the biggest pool for megacoin mining now.
The pool owner steals $500 everyday!!!

edit: should be $500.