Single pickup guitars really help you learn the instrument and learning how to get tones out of it by using the volume and tone controls, as well as your fingers. I would have no hesitation what so ever. Something like an Esquire or Jr would fit the bill nicely.
I own a T-100 head myself. Great amp. What I would try is get another known good 12AX7 and sub it into each pre-amp tube spot one at a time. If it goes away at a specific spot, you have found a bad 12AX7.
I'm assuming you did this based on your post but, if you didn't you can also try cleaning...
I've played a friends Mogami instrument cables in the past. They sounded great, IMO. I wouldn't mind owning one.
That said, Colossal Cables are my absolute favorites. I use the Sweet Fats instrument cables and Colossus speaker cables. Both are just fantastic. The Sweet Fats are the best...
I can only speak for my Bassman heads, and I'm primarily a dirty player. Either channel, volume anywhere from 10-11 o'clock, which starts that nice overdriven tone a la Stones level of drive, to 1-3 o'clock which gets me well into AC/DC, Aerosmith, and Social Distortion levels of drive. Treble...
HUGE fan of the KOT. Just amazing pedal. Another that I would put on a similar level that doesn't get much talk is the JHV3 Ghost Drive. Himmelstrutz stuff is amazing too....Fetto series. I have a Nord myself.
The best approved wife approved solution that I have is the Suhr Reactive Load RI using headphones. Sounds and feels amazing. IRs are great. Sounds fantastic through headphones. Plus, you can go through monitors if you want at low volume as well.
Next best solution, in my experience, is the...
You really couldn't go wrong with any of them. That said, I have a vintage Pro Deluxe that is my #1 guitar. It's that good. I'd also throw a Jr or Special into the mix to consider as well. Play a few if you can and go with what your ears/hands tell you.
Personally, I would rewire it to 4 ohms. Your Marshall will sound great at 4 ohms. I have a mid 70s Marshall 4x12 that I rewired to use with my Bassman heads and it sound fantastic with my Marshalls and other amps as well.
No experience in a 2x12 but, I do have a pair of M75s (25w) and H75s (30w) in an old Marshall 4x12 that I bought unloaded. I went with the M75s on top, H75s on bottom. Sounds glorious!
I would agree with a lot of the comments above comparing the H75 and V30. Pretty different speakers to my...
I don't necessarily have a favorite as I find most of my OD pedals sound fantastic when I play with a Tele. A few standouts:
- Frantone Hep Cat
- AM KOT
- Crowther Hot Cake
- Skreddy Screwdriver
- Clark Gainster
- Lovepedal Eternity
- Spaceman Aphelion
JCM 2000 DSL amps are fantastic. I have a 50w head. Lots of great tones from classic Marshall to hot-rodded. A steal used. I had a TSL for a bit some 20 years ago. Didn't care for it as much. Traded it in for the DSL.