About the GT44
I've got a single GT44 in my studio for evaluation right now. It is actually the first SD mic I have ever had the opportunity to use.
I have only used it on vocals (which I didn't expect much) and acoustic guitar.
My usual chain for both of these applications is
an AT4060 into the RNP. On vocals it was no contest between the 4060 and the GT44. The 4060 sounded much more full and balanced. I know that is probably comparing apples and oranges in that application but I'm a singer so I've got to try everything on vocals
On acoustic it fared much better. Very detailed and not brittle. You could definitely hear the tube but it was not overly "tube" sounding. It was a bit more detailed than the 4060 but then again I can't put my 4060 as close to the strings/body as I could with the GT44 or the whole thing gets too muddy. Still, I like the body of the 4060 on acoustic. In the end, it ended up being a toss up. So for my money I will stick with the 4060 and look elsewhere for a SD mic considering the price of the GT44.
I think a pair of GT44's run about $1000 so at that price I would be giving serious consideration to the competition (i.e. C42, THE, Neumann, etc) before making this purchase.
Bottom line, good but not enough to make me jump.
BTW - I'm not claiming to be the authority on this stuff. I just know info on the GT44 is hard to come by.
Just my opinion
Jason A