I'm no expert on saftey systems, but since ive delayed my first year of competition due to a host of small (but expensive) problems with my race car, im interested in getting a helmet restraint system. The ISAAC seems to be the one you all like... But the HANS device is the one thats approved by NASCAR, the FIA, BTCC and others, whats the difference between them? only on price? Just a thought...

Jc