well, the awesome XB4 from xray is most popular and for good reason works in 2wd and 4wd. Loads have them.
the 22 from losi is as always a good car
a few with the TM2.
and a vega trent has just started.
but there is a mix of cars really.
tyres. normal suspects like shuey yellow spikes for the dry and BB greens and Bboots for the wet stuff.
new astro is grippy and sand free so lots of things work now.