Ive been playing bass for a few years now and Im getting to the point where I am ready to start gigging. Im new at the amp thing because Ive mainly focused on basses. Right now I have a little 50watt Peavey. Im looking to upgrade to a full stack. What I want is a good quality amp with a good quality head. What I would really like is a 4x10 stack with a 15 for lows. Ive heard that using different heads for the 4x10 stack and the 15 is a good idea for a cleaner sound. Tell me if thats true or faults please. Also I would like to know if two 4x10 stacks would be better than a 4x10 and a 15. Im not picky about brands at all. What Im picky about is sound. I want speakers that are good quality and a head with full and total control of tones and such. I want to spend under 1,600 if thats at all possible. If you can list the gear you think is good and why. Id like to get on my feet so I know what to look for. The sound Im looking for is a low warm tone. A good example would be the eagles. Well I hope thats not too much information or not enough. Thanks for looking.