I think the SVT-CL switches to 230 easier (switch in back), where a B-15 needs to be rewired...
__________________ The Official Fender Precision Bass Club #512 • The Fender Jazz Bass Club #555 • The Ampeg PortaFlex Club #208 • The Ampeg Family Reunion Club #831
There's some differences between the CL and SVT-VR but both are great amps. You can frequently find either one at a much more reasonable cost used and they're built like tanks so probably still in good shape unless really abused. Warning, these things are heavy.... but so is the sound, and to me that makes it worth the hassle of lugging it around.
Now if you are doing studio or or cafe type venues the B-15 is a fantastic amp.