I built my own rack, since I don't like the shortness of the tubs in pro-made racks. Also, other racks are WAY too expensive for me!
I put up a pic step-by-step of building my rack on my website - Grove of the Magi (address is in my sig), but here it is. Still works great and is going strong. Now if only I could get the snakes to stop moving the thermometer probes so I could get consistent readings.
A few alterations have been made to it recently, such as covering nearly all the tons of holes I put in the tubs (yes, I went hole crazy...but it's easier to cover old holes than to make new ones) and adding some cool side hides. Another rack like this, but with some 'false' secondary floors to raise up some 10" high tubs for juvi BPs, is in the works.