the xfactory conversion is like a totally new car to the B4 it handles very differently and well worth it for the majority of drivers as many will say it's easier to drive and more consistant than the b4 or xxxcr and still really fast which unexpierienced drivers benefit from alot as do top end drivers that like to go at stupid speeds round the whole of the track without making so many mistakes, I've got both B4 and X6 now struggling which one i want to drive this year as the B4 is really quick and feels more rewarding and quicker if you don't make any mistakes but harder to drive and the X6 is easier to drive and put in consistant runs but is a fraction slower i think.
losi in 1/10th have almost died out in my opinion, well they have in my area, I don't know anyone who runs xxxcr at my local club anymore and don't even see them much at regionals etc those who did now own B4's or X6's
