i've spent way too much time and money on boosts and overdrives!
Got the Monte Allums SD-1 GT mod, very bright and quite thin.
Keeley TS808 mod plus, great pedal, still has the mids but has more gain at max and less at lower settings.
Analogman Maxon OD9 Silver mod, flattened out eq, no mid push.
Analogman Brown mod on an Ibanez TS9, what i imagine the best tube screamer to sound like
Ibanez TS10, like the AM Brown mod.
MXR GT-OD, like the Keeley mod plus but more output level. (sold)
Fulltone Fat boost V2, massive volume boost when using 18v. The Tweed crunch is nice at low levels.
Crowther Hotcake. Great pedal, lots of volume and gain available if needed, can spend ages fine tweaking it.
T-Rex Mudhoney. Very TS like but with slightly less gain on the standard setting, quite fuzzy with tons of low end when the boost button is used.
I Just picked up a Butler Tube Driver with the Bias mod, not having great success with it at the moment... need more time with it