I have to agree on the fact that the 2:90 sounds really huge and seems to be the perfect match to the Triaxis. However, it's all a matter of taste, if you don't need that heavy bottom low end, maybe the 50/50 will do it. It'll be less heavy and your hand won't go that far in your pocket to re-tube it. Honestly, the 2:90 is insanely loud, I can't turn the volume knob past 10, it's too loud for a lot of places I play, but I preferred it to the 50/50 for the tonal variations I could get. It also depends on your cab, do you need the extra bottom of the 2:90? Again, it's a matter of taste up to this point. All that heavy bottom can also become against you, like in my band, the other guitar player has that annoying razor guitar sound, very bright and almost no bottom at all (he plays in 4 x 12, cheap Fender but still a 4 x 12) and when we record ourselves live, he's always up-front, if I want to make a difference, I have put my presence knob all the way up, put some more treble on the Triaxis, so most of the time when recording, I don't really need all that heavy bottom. And in studio, you can tweak everything you want, a thin sounding guitar will become huge with a couple of plugins. Anyway, I love the sound of my 2:90 and I really think I sound huge when playing it, tones I'm getting are unbelievable. Try both, analyze your budget (yes, it's expensive) and if you feel like getting the 2:90, go and get one, you won't be dissapointed.
