Re: b52 tube amps
B52 is a newish up-and-coming amp maker, that is putting a lot of value into its new amps. There are some reliability peculiarities from what I have heard, so be advised that shipping an amp across the USA is not cheap, and multiple repairs for any amp are a piss-off. Last time checked, they were based in SoCal, so a trip from the desert would not have been a big deal breaker for me.
I was looking at a B-52 a while back, but settled on my used Mesa .50 Cal +. This Mesa can be had all day long for $500 on Ebay, in either a 50 watt head, or combo.