Ok ...here goes: 1. Fender Geddy Lee JBass 2. Ampeg B2RE (450W@4ohms) 3. Ampeg SVT-115 (8ohm) I need another cab to add on. This is my first month playing, played guitar for about 20 years. I am thinking about the following: 1. SVT-115 (to match) 2. SVT-18 3. SVT-210 Which would you add on ...another 15" and call it good ...or ... the 18" for earth shaking low to compensate for the geddy lee's midrange and lack of lower bottom ....or ....the 2x10's to round out the top end. Also, would the 18" be to much with it's 500w rms -1000w peak for my 450w B2RE that is already feeding a 200w rms - 400w peak ampeg cab. These are the three choices ...what would you do and why. Thanks, I need your opinions because bass gear IS different than guitar gear.