I have AP, Freedom breeder and Vision Racks.
The Vision are by far the most versatile. The CB-70 is a great value and also can be converted to hatchling and sub adult tubs very easily.

It is 11- CB 70 tubs high or around 66 -hatchling tubs or 44 -sub-adult tubs or a combination of all three if you want. No other rack gives you that kind of versatility. Shop around and check prices. I have 2 Visions racks now and enjoy changing them as my needs change.