im new to this suspension stuff and was wondering, which is the best set up for suspension out in the market right now? im running a 2007 328i coupe with sports package and i just want the perfect drop with my set of 19s but im not sure exactly which brand or type to go for...it would be great if i had height control as well. is there any brand out there (price not being a factor), where spring and shock combination/coilover that will ride as closely as possible to stock? after reading a couple of posts it seems like the KW v3s are pretty good? lastly, this wouldnt void my warranty would it? any input would be greatly appreciated. thanks.