What are some of the reputable "small board-houses"? Any recommendations?
If you want somebody to populate the boards for you, I love Macrofab: https://macrofab.com/
Edit: just checked out Macrofab and they seem to be more expensive than circuithub at least for the couple example projects I threw into the quoting engine.
I also like macrofab if you want something assembled.
A few times I have ordered from the board houses on Ebay. Like $20 for 10+ boards and they come in about 2 weeks.