I'm pretty happy with my 35mm. I was specifically looking to boost the low/mid, and also hold the top end back a little.
The low/mid is definitely there, throttle response is good, and it really didn't choke the top end as much as I thought it would, I'm still constantly bouncing off the rev limiter in the lower gears. Engine is stock bore, stock porting, with a basic FMF pipe. I built it to run along side a piped 400EX, as a basic trail machine, and it still walks away from the 400.
Totally happy with my 35mm, this is a fast, peppy little trail machine.