, I play in a rock/reggae cover band and play jazz basses pretty much exclusively. We play bars and such; most of the places we play don't have volume restrictions, my drummer hits really hard, and there are two guitarists plus a keyboard player.
The rigs I'm considering are the M6 with either two PH 1x12s or two PH 1x15s; the WA head with the same cabs; the M-Pulse 600 with the same cabs; or the WA Scout with the extension cab.
In addition to the obvious requirements of tone and headroom, I'm looking for portability (everything has to fit in a Toyota Corolla, which actually has quite the trunk -- but this is where the 12s would seem to win out over the 15s) and to pretty much not want to buy another amp again ever.

I'm leaning toward separate head and cabs as I tend to like modular rigs (and I'm aware that the WA head can be removed from the Scout). Any musings, suggestions, etc. will be much appreciated.