Uh oh. Another Limit versus No Limit contest.

You can make about as much money at either one for the following reason:

You need $1000 to be properly rolled for .25/.50 no limit. If you carve out 8bb/100, then you make $8 every 100 hands.

With the same 1000 bankroll, you have almost enough to play 2/4 limit. If you can carve out 2bb/100 there, then you make $8 every 100 hands.

Case closed.