Here is my problem. I have about $850. I have a 4 string P/J setup that I am not in love with, but sounds pretty good with a new DiMarzio Ultra jazz in the bridge position. I have a SWR workingman's 10 at home that functions well and is loud enough for small venues. I have a 15" cabinet in which I put an Eminence Beta 15 speaker but the cabinet volume is really to small. Then there is an Ampeq SVT-350HT that I have borrowed and can use most of the time over the next couple of years. Question: Where would you spend your money. 1. A bass that I like better such as a Fender Geddy Lee with upgrades, or a Skyline 55-02, or 55-01. 2. Spend the money for a separate head. 3. Invest in some good cabinets.