The CRX is not super hi tech, but it certainly opens to door to a variety of wind conditions and is fun to race. I really enjoy racing foils, and have a very good Spotz2. I'm not into the RAM kites as i often drift launch and ride well out into the bay. I must say the CRX is noticeably slower than my custom foil, but extremely easy to ride. I guess that it really comes down to the fact that I don't have enough time to test open class equipment as I used to, and none of the best foils are available to people a bit lower on the list like me. Therefore, unless you are at the top, it seems a waste of $$$ to travel to large events when you are 1-2 degrees off the angle, and 1-2 knots slower at best. Interestingly, its seems that several of the top open racers are now carrying more than one complete set of RAM kites. This simply takes it to another level.
If you like to be competitive, want to save some money, and don't mind racing at slightly slower speeds (14-15 upwind, 22-24 downwind), then maybe OD CRX is for you. I certainly don't think that this is exactly what I'd want to see in the Olympics, but it certainly is a great feeder class to more open class racing. I really felt like I was racing on the CRX, as the speeds and angles were quite close. This type of racing brought it back to board handling skills, and thinking, rather than simply speed sailing around little yellow marks. It's not going to be for everyone, but it was fun as hell.
The other cool thing is that the kites cross over perfectly for recreational riding on TT and / or waves. I'd still race both classes if I could afford to do it, and be competitive, but I'm not sure it's possible. In truth, I'd suggest that the best racers will still win in either class, I just think that CRX, like any OD class, will bring the fleet a bit close together, and allow new racers a chance at tuning up their game against the top riders.
I want to disclose that I have a relationship to the Pryde Group. This being said, I really enjoy racing, and this option allows me a chance to win some windward legs again... at least for a short time!
PS... The new windsurfing hydrofoil gear was awesome to watch in Miami this weekend. I'm going to give that a shot also! Antoine Albeau was impressive. I had a chance to line up with him to tune upwind. He was on a 7.8 and the NP RSFlight windsurfing foil, with me on a Spotz2 and a CRX 7 meter. I was fully powered and riding comfortable. Upwind, we were very close. I'd guess that we were within 1/4 knot of speed, and .5 degrees of angle (of course open class kite foils would have had him by 3-4 knots up, and 5-6 knots down, with what I assume would have been 3-4 degrees of angle each way). His tacks were better than mine, but we would have rounded upwind within a very close distance. Downwind, we held about the same speed, with my kite riding 2-4 degrees lower. He had a GPS on and said we were doing 16-17 knots upwind. I didn't catch the speed down wind, but probably around 25 -27 knots. He was about 25% faster than the other windsurf foil guys from the West Coast (Steve S., and Jesper V.). A2 was finishing the races in about 7-9 minutes (2 laps), and the others at around 11 minutes. Pretty cool to watch.