BMI chassis is incredible - I have the very last Gen1 chassis made and sook is right - it's the last chassis I'll buy (unless I break down and get a new BMI chassis).
The best thing about it is that it is the strongest chassis available and takes all the flex out of the chassis. Hmm, sounds positive and it IS.
It completely eliminates tweak and lets the suspension. . .suspense!
I've run a 30 minute race and banged my way through the entire thing (people just wouldn't LISTEN that I didn't want to race. . .just wanted to survive. . .) and put it on the tweak station right after - dead nuts on!