From the Fender Pro Tube Series, I think the Concert Reverb is the best sounding version, w/4-10's. Luckily, new Fender amps depreciate in price quite a bit, so you can score a used one for around $800. These amps have the best highgain circuit Fender's ever had, so the gain channel can be used for a vintage flavor, but also do metal pretty good with Duncan humbuckers.
Pro Tube amps have tube driven reverb and tremolo, so tha AT7 is a driver for one or both. Also, there's a removeable plate on the back of the amp, so you can bias the amp yourself with a voltmeter, without even having to remove the chassis. I wish all Fender amps had that cool feature!
I had a Concert Reverb for a couple years, and it was a great sounding amp, especially after I retubed it with GT12AX7C's and Svetlana 6L6's.