You can't go wrong with the A1 Mini. Way ahead of the pack (IMHO) in that it doesn't require any tweaking (or even assembly), and just works right out of the box.
[Have Altium if the board is of interest] -- I use the CADENCE/OrCAD program and I can import Altium PCB files into it. Attach your Altium PCB-design file, along with your GERBER and N/C Drill files and I'd like to check them out. (NOTE: I also have CAM350 for importing GERBER and N/C Drill data files).
My PCB in the image shown above was created using SolidWorks, purely as a means to initially determine what all of the mechanical design details of this PCB needs to be. I could even import a SolidWorks DXF file into my CADENCE/OrCAD program, which would then give me not only what the size of the PCB will be, but also where to precisely place my component footprints when I do design the actual PCB. In addition, I am also designing a "Version-2" of this little bracket assembly to house the larger 8-pin socket as well.
[If someone is making these I would be interested] -- I'm going through the entire process (and, "headaches") of designing these right-angled/PCB-mounted tube socket assemblies purely for my own personal projects (and, "pleasure") just because "I like doing things like this"!!! However, in the back of my mind when posting my above response, I figured that there would be one or more members on this forum who may also have an interest in having some of these custom-designed PCB tube-sockets. However, that then enters into the realm of a "group buy" scenario and all of what that entails and that is something I haven't included in my current stage of thinking whatsoever.
In addition, I am currently in only the initial design phase of this little project and I have no clue whatsoever as to what the end cost will be of these two PCB-mounted tube-sockets. But, I do have a rather vague idea that the final cost will probably be far more than what the average GroupDIY member would be willing to pay (I'm guessing). As for me.....>> I don't care (up to a point) <<.....of what the cost will be because I am willing to absorb the higher cost of an item just so I can have whatever it is that I am designing to be exactly how I want it to be designed and built!!! But.....that's just me. In any case, I suppose I can approach the "group buy" scenario once I start to obtain parts and sheet-metal quotes from the various suppliers and vendors. How many would you be interested in purchasing for your own inventory? As I know that you already well know.....higher quantities brings the overall piece-part cost down. Is anybody else "out there" interested in having any custom-designed PCB tube sockets???.....
>> I just wish that I still had some of the "Right-Angled PCB-Mounted 9-Pin Tube Sockets" that I had purchased back in 1975 because they were cheap and mass-produced by a major components manufacturer (TRW Corporation). I have spent a lot of time online doing all manner of "searching" for this item, trying to find out if there is any history or even a mention of this item that may be archived somewhere. So far.....no luck!!! One item that I really liked about the TRW PCB-mounted tube socket, is that the tube pins within the socket-base were integral with the PCB-pins. Meaning, the tube-pins and the PCB-pins were all a single-piece of stamped-out and formed metal. The PCB-pin portion extended out from the rear of the tube-socket base a few tenths-of-an-inch and then were bent down 90-degrees. It was all simply elegant. Oh, well.....memories.....