I have played a few nice combinations of amp and cab at GC and have come to the conclusion that the SWR Goliath III is my favorite cabinet, hands down. The only question about it is what do owners think of them after having them for a while and how they last, how loud they are, how they hold up in a live situation, etc. And since I'm going stack instead of combo, what head should I get? I'm considering an SWR Bass 350, GK 800 RB II, Ampeg SVT-3. What's the best? Any other suggestions? Thanks. I'm new to the stack world.