I’ve had good results with jlcpcb and I push their manufacturing limits a little bit now and then to get the miniaturization I need. 0402, 5mills, tight vias, small BGA no bad boards yet (n~1000). Tried pcba too, worked, but a small sample size. Even in HASL they work and their stencils are dead-on.

And $2.10 plus shipping for 5 boards, $7.50 for ten (4layer FR4, HASL, small boards) is crazily subsidized for prototyping. It’s like free prototyping boards. Even 6 layer and flex boards are cheap. They also have crazy cheap CNC and 3DP, but I haven’t tried that yet.

Also the integration of the free design tools (easyEDA pro , DFM review, etc) is unbelievably efficient with one-click to order parts or boards lol

I have had a great customer experience so far, but I do suspect they are either subsidized or use a lot of loss leaders to pull people into the ecosystem.

Other companies may offer better quality, but I’m fine with Toyota, I don’t need Rolls Royce for what I’m doing.