The more I have read in this forum the more confused I have become. I need accurate info on the above. I am a singer songwriter/acoustic guitarist that is also taking up bass. I have narrowed my choices to the following: GK Backline 300W Amp - GK Goldline GLX 2x10 and 1x15 300W GK 700RB11 480W Amp - Same as above GK " " " GK RBX 2x10 400W and SBX 1x15 400W I suppose I could pick up a used 1001RB11 if it would make any difference. Please respond if you feel you have ACCURATE info. Thanks!!