I just picked up a second hand dex 210 & ran it for the first time at caldicot last Friday. I was blown away by how much harder I could push into corners. I've never driven a mid-motor 2wd before either. it's brilliant - just a hint of understeer before hooking up ready for a thumbful of throttle. it was supremely stable and predictable. and I haven't even started to mess with any settings yet. my trf was very waggly, especially under braking and turn-in.
with a 10.5 I managed to qualify 7th, and my delta got smaller on each run. I think I'll try a 7.5 next time