So first things first, I was not asked to post a review. I am not getting a discount, or paid or compensated in any way. I am simply posting this because I posted previously when I had a bad experience with PCBWay. I think it's fair to give credit when it's warranted as well as to give criticism where it's warranted.
I received 1,000pcs of PCB's (actually the same ones PCBWay screwed up) a week or two back, but this time from PCBWin. The quality of the boards is fantastic. They are nothing too difficult to make, 2 layer, FR4, 1.6mm, ENIG, 0.006 trace/space, white soldermask, black silkscreen on one side, tented vias, 2oz copper, etc. The only things that were "different" about the order were that I asked PCBWin to panelize the boards for me, and I had somewhat picky requests about how it was done (because the boards fit into a very tightly machined housing), and for the same reason I was quite picky about the tolerances of the routing and that it was done cleanly without ragged edges.
I was supremely impressed with the outcome. They used a smaller drill size on the rat bites for the panelization than I've seen previously which actually eliminated a secondary operation, and all the layers lined up perfectly. The quality of the boards overall is top notch - easily on par with the best from any other board house I've used. My previous go-to when I needed top notch quality was Myro, but for some reason their prices have gone through the roof. I'll happily be using PCBWin as my go-to for high quality production work, provided the quality on future orders matches this order.
They also made stencils for me - they were framed and quality was also excellent. Couple of final points that impressed me were they had no problem at all sending me the Gerber files for the panelized boards. I know any good board house will do this, but I've had some balk at the request, so I was happy these folks didn't. And I've had excellent during and post-sale contact from Zoe. She checked in with me a few times to update me on status and actually gave me a phone call post-delivery to ask how I liked the boards.
So... take that for what it's worth. I have 3 more PCB's that I am running low on that are a bit more demanding... one with even more finicky panelization. Another that needs high density drilling and filled vias, and another that's a long/thin flex PCB... so we'll see how those go, but I am optimistic! They weren't the cheapest option (although IIRC they were one of the cheaper choices on PCBShopper, maybe $30 more for the whole 1000 boards than the cheapest guys) and they weren't the fastest, although they were quite fast... but the boards were done in exactly the # of business days listed (counting from the day I approved the panelized Gerbers). Two thumbs up based on my experience thus far. Kudos to Moon (sales lady I spoke to at first) and especially Zoe who took it from there and answered a bunch of ??'s and kept me updated the whole way.