Hi everyone. I am thinking about purchasing either an e36 or e46 M3 convertible as a second car. I was wondering if there were issues I should be on the lookout for in either case. For instance, I have heard the SMG in the e46 is not particularly reliable and that the VANOS system is prone to fail. Any other items? Also, I've been reading that regular valve adjustments are necessary--any other regular service items above and beyond the "normal" BMW care? A good independent service shop near DC for M cars would also be a helpful recommendation. Thanks in advance!