I've found a used Ampeg b-2r (older model, not the new b-2re) and a hartke 410xl in great condition; out the door $600. Is this a good price? Are they generally good brands? Been playing guitar for 10 years, but I'm relatively new to bass. I know that many guitar players pride themselves on tube amps for their tone... is it the same for bass amps? Should I be looking for a tube amp instead of the SS b-2r?