Aaron, I use a Diamondback as well--- a 2 burner it's almost a year old now and is holding up very well. It will get hot enough for forge welding, and is very easy on propane(I can get about 12-14 hrs on a 20# tank running on 5-6 psi).
And welcome to IFI-- you won't find a better place on the net for all types of smithing or a finer bunch of folks.