Phil,
Uncle Charlie and I upgraded our suspension last weekend at the CT Tech day.
I went with 412's and new progressive fork springs. Total a different bike and handling.
I ride two up alot with my son right now about 350 lbs. I have yet to bottom out the new 412's (something the stock springs did even at the hardest setting) on the softest setting with Brett and I have tried to find every bump in the road.
I just do not see how spending another $200.00 would improve the ride or handling any better at this point.