The single biggest issue you need to be aware of is the headbolt issue on 2008 to mid 2010 C63’s. This is a problem where the headbolts fail and causes a loss of coolant that ultimately causes an engine to hydrolock and fail. Many owners have reported this problem on the forums and paid out of pocket costs upwards of $20k if no longer under warranty.
http://www.secretentourage.com/lifes...-buyers-guide/
Good luck. Find a good indy Mercedes shop.
I'd keep the Camaro for when you meed to save up for a service job.
JK, I do miss my Bimmer (but not the service rates).