I really don't have much to add to this thread at this point, I had a chance to play with the G3 yesterday at work for a bit, and tested B41 on it, most phones there lock down to it even though the signal averages about -110 db in most locations With the G3 next to my HTC M8, it was picking up B41 about 5db better or more. I moved the phones around a lot and swapped positions and it seemed to remain that way at my desk over a extended period of time. Speed tests on the G3 were always several megs faster, I guess to the better signal it was pulling. The upload speed especially was more than double.
Later on I walked around with both, to a area that is very very weak for B41, and both the M8 and G3 seemed to be about the same at that point. Regardless I was impressed enough with the G3 to order one to swap back and forth with my M8. I miss a phone with removable batteries.