I've own / owned many TA, TB, TRF cars. The XV01 is everybit capable as any of the TA and TB cars. It's also much less of a headache in setting up than any TRF car.
In 2014 I sold my TRF416 and was about to pick up a TRF418 but held off after reading the reviews. So I set up my XV01 for racing on asphalt in RCGT class. (Using the XV arms, not the TC) It was a dream to drive, really easy and I did pretty well with it, considering I was up against X-ray T4s.
A few months later I briefly dabbled with a Yokomo BD7 RS and it broke on every run. So I switched back to what I know.. picked up a TB04 Pro and that was a nightmare, could not get the rear end planted. I sold it and picked up a TRF419.
TRF419 is the best TRF car I have ever owned and the 419X is supposed to be even better. There are so many parameters to tune on the car that it makes your head spin. After I leave the track I find myself remembering yet another thing I could have tried.
The XV01 still remains the best all around car. I take it on every trip to mountains, snow etc. Heck I even travelled to Brazil with it.