Which fox shocks are they? The Khaos shocks are pretty nice.
The package which we sold for this winter and will also be available rolling into next year is the Float 3 QS3-R Burandt edition shocks.
While the WER Velocity shocks are by far the best shock package Polaris has offered on a sled it is still unfortunately rather "dumbed down" in setup for consumers. We put a couple hundred miles on the factory shocks to get comfortable with various configs before switching and running the new fox package as well as did side by side back to back laps on harsh terrain to really compare what was different.
The simples change but biggest gain we saw with the Fox package was ease of adjustment, on the Velocity shocks, too many finite clicks exceeded what any of our test riders cared to tinker with and it was very common to lose track of where you were at on adjustments. This resulted in guys just sort of just cranking knobs without much purpose. The Fox with the QS3 package is awesome and an easy way to make a substantial change from 1-2 or 2-3 etc and also very quick easy visual to see what position you are in. The 3 position clickers represent distinct changes in shock performance that anyone could feel, not some minute change that is almost impossible to discern.
Range of use - The next thing would be the broad range a single setup would run, meaning, with one setup (and clicker position/air pressures) we could easily ride in a larger variety of terrain without making adjustments to the shocks. The progressive nature of air springs coupled with the Evol chamber creates an impressive ramp up in spring rate. This means you have a nice soft initial rate ramping up to very firm right at bottom out. We found various members of our team could run the same setup from trail to powder/backcountry riding to rather large jumps all running the same setup. With the stock velocity shock we just found we were making adjustments more often chasing the "perfect" feel.