Is all the other service up to date? Filter and bias caps under 5 years old, bypass caps tested and replaced as necessary, voltages tested, and phase inverter checked for balance, bias checked and adjusted for your playing style etc? If not you're wasting your time chasing speakers. Have the electronics dialed in first - THEN go speaker shopping. without knowing your style it's hard to recommend speakers. Rock, country - metal?? All require different speakers. For most cover band situations the ceramic WGS version of the creamback is often a good choice. But knowing more about WHAT you play would really help.