I currently own a Hartke Model 2000 Bass head and an Ampeg SVT410HE cabinet. I was wondering if would be a good upgrade to buy an R1015 Full Stack from Carvin. The RL1015 is a 1000W Dual Channel Bass head with tube preamp. (Just like the HArtke) and the cabinets are a 4x10 + Horn and a 15". Any experiences with this rig?.. If so... would be good to sell my current rig and get the Carvin??