Im sure most 10th cars will struggle a bit on blown out 8th tracks but i honestly don't think you can go much further than the x11.....
At one of our Nationals this year the Factory Associated drivers were having to put Losi shocks on there car as it was that bumpy. The Pred flew through these bumps!!!!
I would make sure you go for the x11 08 version and make sure you do the team mods, setups can be found on the
www.the-pred.co.uk