The V710 is one of the best autocross tires around, and is light years better than the A048 in terms of posting fast times. The A048 is aimed more at track day enthusiasts, and won't generate heat quickly enough for the typical autocross track, but will survive a lapping day brilliantly. The V710 would last about 10 minutes lapping a race track.
These are very different tires built for very different purposes. The V710 is ultra soft, ultra sticky and heats very rapidly (just what you want for autocross and exactly what you don't want for everything else).
If you're autocrossing for fun, stick with a track style R compound like the A048 or the newer Toyo R888 or Nitto NT01. If you're trying to win, the V710 or the Hoosier A6 is your choice (assuming you're running in a class that requires DOT R compounds).