I just noted the date of your post and realized that you probably already made a decision. That being said, which system did you end up with ?
I too have been looking at a braking system to install and as you I looked at Blu Ox and the CW products. I also looked at http://www.readybrake.com/
I just can't see spending $3K plus to set up and Ready Brake is about 1/2 the price. I've added the webpage above for you to check out. They're also on YouTube.
Some of the RV's are using the Ready Brake and really like them.