anybody uses this?
or if you've heard, is it good or bad?

for the e46 m3 cross ? there's a design flaw where the springs are too long, especially rear, it won't even go lower than stock height. the ride is pretty good, it's just the lack of adjustment sux. it can be easily fixed by swapping the springs to shorter ones though. overall it's nice kit.

i don't have any experience with bmw's suspension (i've only owned it for about a week now), but I will say that IMO, you can do better for the money than JIC's....

I have Cross/JIC on my track Porsche, and it is excellent. The system has become highly respected in Porsche circles amoung track junkies. While I have no experience with the M3 application, I can highly reccommend the design, quality and balance of thier systems.