Hi. I have a Fender P-Bass. I have a Nemesis 4x10 4-ohm cabinet rated at 450W. I like an all-tube sound but have never owned an all-tube amp. What would be a good match for this cabinet? I found an SVT-Classic for a good price, but would 300W of tube be overkill? I would like a bright, warm, distorted sound. I play with my fingers, and some strumming. I play math-rock/post-rock. Bands whose sound I wouldn't mind emulating are bands like Don Caballero, Maserati, Mercury Program, et al. Thanks in Advance.