I would go with either an Orion or Orca 7.5 or 8.5....
I have recently gone to 8.5 in my 2wd and its made me much more consistent and therefore quicker, but its still very quick down the straights..
Inside line had some cracking deals on the orca's and sell orion too, not much to choose between then with regards to performance IMHO but the orion's do look very nice indeed. (and I for one like to have matching kit)
On a side note, the R10's are just fantastic...
