I ended up going with a Marshall Valvestate 8008 for size and simplicity... I loaded a 4x12 with WGS Green Berets... When we finally get out to gig, I'm just going to have the patches tweaked with the cab sims I set through my KRKs at home, and set the secondary output before the cab sim into the power amp/cab route. It's made the most sense to me so far... it doesn't throw you off, because you still have a regular guitar cab behind you, but you can send a stereo XLR feed to the house. Then, yeah, your tone-life is in their hands, but it usually is anyway; so, I'm just trying to give them something less to goober up. I've used it just stereo into the house and only had a monitor on stage... sounded great in the house and recorded, but just felt naked not having anything really jamming at you.
Good luck man, I hope a pa/cab treats you better... try to even go cheap at first, you might be surprised.