I met with the guys from RadFlo at SEMA this year and their products are great quality. I'm thinking of using them on my current xj project, but I'm not completely sure yet. As for a race vehicle, I'm not completely sold and doubt I would try them personally. I do agree that their CS is top notch!
I've used Bilstein many times and their quality is fantastic and you can't go wrong using their shocks. Shane at Bilstein is really cool and into the off road scene, so that helps. LIke I said, you can't go wrong with Bilstein (unless you don't buy the right shock for your intended use!)
Sway-A-Way is a great product too, plus you might be able to save some coin as well (Maybe). We run a Full Sway-A-Way setup on our Class 8 truck and they work well enough to win us 3 championships.
Make sure you get some bumps to go along with your shocks. In a perfect world, I'd tell you to run bypass shocks so you can easily tune them too.
Just my .02
JC