I guess you could say I have a favorite rig, as opposed to a favorite amp.
The amps and switcher live in a small nook on the left in the recording area of my studio. Left to right: PRS HXDA, Mesa Fillmore 50, PRS DG30, Mesa Lone Star 100 W.
They’re all connected to an amp and cab switcher so any amp can play through any cab at the flick of a switch or via MIDI. Lots of different combinations can be switched on the fly when recording under tight deadlines. It's a pretty slick rig that way.
All four amps do different things, and feel necessary for different projects' needs, so while the HXDA and DG30 see a lot of action, and are certainly my two favorites - they always feel like higher-end beasts - the Mesas get used quite often, too, and I like the Mesa sound in general. Always have.
The two PRS amps are hand wired. The Mesas are not, but with the NOS tubes they’re very satisfying to play through, and I like the way they sound almost as much. I get tone compliments from clients - lots of ad creatives play guitar and notice good tone - so that’s a plus.
All four were improved by installing NOS tubes (the DG30 was one of the Experience "First 20" when the amp was introduced, and came with NOS glass).
The switcher in the equipment rack is by the Swiss company KHE, is dead silent when switching, and doesn’t affect the tone at all. There's also a Furman power supply with a 45 Amp reservoir that works as advertised. The reservoir makes an audible difference to the performance of the amps.
The amps and cabs are wired up with PRS/Van Damme audio and speaker cable, except the DG30 amp's speaker output and cab input are wired into the switcher with DH Labs T-14, a cable my vendor thought would work really well (it does).
The amps were bought between 2014 and 2019. They’re well beyond the honeymoon phase, and I still love working with them as much as when they were new, if not more, which is good since I tweaked the amps with tube experiments and I can't get that time back!