Many of Fortin's Marshall mods sound great. No hate from me on that front. But some of the other stuff... well the info's out there already.
As far as the Cali goes, it does sound good. Nice blend of options with the Aldrich/Jose combo. But I didn't personally vibe with the amp much. Too many switchs/dials. Too many options for me. I spend more time fucking with the settings vs playing. And it was hard to get a really perfect sound out of it because of the options. The jose side of the amp, compared with a Jose you can build yourself... meh. I prefer a stripped down, simple 800 with Jose mod. The Aldrich side... it did sound good, but something about it was just off for me. Everyone's got an opinion.