Getting into hoggies: rack system?

I'm thinking of getting into hoggies. I'd like to keep a number in a rack system.

My question to you guys is what should I be looking for in a rack? Enclosed rack system? Open back? Belly heat or back heat?

How about multi-size tub accomodations so I can house both adults and hatchlings in the same rack?

If any of you keep hoggies in racks I'd love to see your setups.

I don't have pictures but I keep females in the ARS 3033 type tubs. I buy my tubs locally for half the price ARS and FB sell them for.

I like the Vision V-18 or ARS/FB baby sized tubs for males.

I prefer belly heat.

I use ARS, too.