Screaming Circuits, last I used them they were pricey for small jobs and not terrible for 50-100 parts - the setup fees were kinda high.
IIRC they use Sunstone for the PCB (or you can send them the pcb). They do the PCBA in house. They are in Oregon.
I've switched to JLC mostly. Even with shipping and tarrifs and inventory risk of having parts in China (instead of on my shelf), it has been much cheaper and faster. We'll see if that stays true next year.... There is a small domestic shop I use for hand PCBA sometimes too. Lots of those around but can be hard to find, usually ends up costing $$$.
Off topic rant: I wish JLC would hold the parts under a carnet, if you consign them parts you have to pay VAT/import tarrif into China, and then US import tarrif again. But even after that it is still cheaper. I worry about the future of US prototype manufacturing.