Losi parts, back up and advice is still as good as it always has been, we for one still carry EVERY parts for all of their off road cars and they all still sell really well, they just have no NEW cars out so are seen to be unfashionable and the team is as small as it ever has been so their prescence around the track is much lower. There used to be only two or three major players in off road (we have had more but it was always AE - Losi and I should really say Schuamcher), but now there are lots of new makes out there and the teams get spread very thin.
The XXX is Ok, if you like it go for one, the B4 is more popular and has found more success on UK tracks, but Darren Bloomfield proves regular that a XXX is still way competative with the B4's etc....
I will finish though and add one point.............get an X6!!! They ARE just awesome!!!!