If you want to go fast and have $22,000 to spend there are better options than an XP1K.
A T2 can be had for $11,000 new. There is no comparison when it comes to how stout the Kawi is built compared to the others.
There is no better value out there than a Kawi Teryx. To ask for a comparison without including the fact that a T2 is about half the price at $11,000, AND the T2 is still in the hunt tells the story.
I spent $1600 on a used Long Travel kit for my Kawi T4, and it hangs with XP1k 4 seat in the dunes this weekend no problem. I was running without paddles all weekend to boot. Sure I couldn't make it up China wall, but performance was close enough that I was faster than other SXS on a dune ride if I wanted to be. There's no marked track in the dunes so cutting low on the face of dunes will get you past cars with 2x the horse power and they won't know what just happened. The challenge is amazingly fun, the satisfaction of out driving a higher power car is priceless. In the rocky desert, the advantage of having more power in an XP is even smaller. If you make a mistake at speed on hard pack, the results are harsh, thus the guy with more power is still checking up.... Unless he isn't... At that point you should be on the Race Track in a Race Car. And even then the Kawi Teryx platform is still the UTV of choice with a ZX-10 street bike motor in it.