I own the Acousticb200 combo but I need just a little bit more power. I'd REALLY like to try a GK (Backline 600 to start).But I've heard the BL 600 is not very reliable. So I'm thinking of buy one and a b200h for a backup. Is this a good idea? Also how are the Goldline 4x10 cabinets? Are they worth it? I was looking at a Hartke LH500 but have really wanted GK because I've heard they really pack a punch. Any help please!!