Ryan's TTR .21 powered truck runs great. It has a strong bottom end and a pretty good top end. It always runs consistent. The only drawbacks I can see are that it's drinks fuel and it usually breaks parts(diffs, tranny gears, CVD's, etc..)
Ryan and I were drag racing in some of X's pics. The TTR would take my 2.5 on the start. The 2.5 would keep up on the top end though. I was running stock gearing(20/72), and Ryan was running 22/72. We were both running the same 20% fuel. The 2.5 was running about 240.
That T-Maxx didn't just "look" like it was 6' off the ground. It was that high and we were getting about 15' of distance. My truck suffered no broken parts, and that was after several less than perfect landings.