I'm happy with my setup, but if I was starting over on a budget, I'd be tempted. Add a pump and kettles, and you're batch sparging on a single tier system, and even HERMS brewing if you're clever. Another pump and you're brewing on a homemade 5 gallon B3-1100.
http://bayouclassicdepot.com/tb650_triple_propane_burner.htm