I'm looking for a few days turnaround, and making ~100 PCBs.
Where can I go for quick PCB prototyping?
Would I be better off setting up my own wet-etch system for protos? Toner transfer method or photoresist? (I haven't done a wet-etch since high-school, about 20 years ago.)

Thanks,
-- Mitch

Eek. That's a tough spot to be in. 2-3 in a couple days is easy. 100 in a couple weeks is easy. 100 in a couple days usually gets expensive. My usual go-to services are pcbexpress (from sunstone) and pcbfabexpress. Not sure how either will do with those params. Who is the best will depend on what specs you need as well-- with soldermask & silkscreen, it's not so easy to do at home.