I have 2 and they are the best dune quad out there, and they are not slow. If you want to just race up and down comp, stock you will get beat by the others but duning, you will hang with anything out there. You can stop at the bottom of any dune at Dumont and then take off and climb to the top and over to the other side unlike a raptor or similar that runs out of power toward the top. I had 2 raptors and now I have a 250r and they are not close to being a dune quad as the v force.
Whats nice is the v force also has engine brake so you seldom have to use the brake, the throttle is go and stop which makes it best for newbies too, no missed shifts and no getting stuck, I have yet to get a v force stuck.