i have mca blues in my c34 for roughy 8 months. they are fantastic. Josh and his team know their stuff and go into explaining everything about it and the reasons why, they are aus made and wtac podium winners etc etc.
would not go BC's because A) Every car i have been in with them are shithouse and have leaked and lost compression rebound within 2 yrs B) do not have enough adjustment to handle stiffer springs and do not go high or low enough C) have to deal with people like mechanicalstig who want to rip people off.
what are you doing with the car to warrant the XC's?