OP, if you are interested, check around for a LGS that sells Class 3 items and see if they have a Silencershop kiosk. Mine has a kiosk in it now. We just used it to start the process on a Silencerco Hybrid that the store had in stock. Took our fingerprints and everything. Silencershop is working to get kiosks set up in LGSs across the country.
You can go to the Silencershop website and use the Class 3 finder tool, check the option for only Class 3 dealers with a kiosk, add your zip, and away you go.
If you are dead set on something other then Silencerco, I hear good things about Dead Air. I just don't have any experience with them personally.
ETA: I just saw you were in WV and did a quick check. Looks like Just north of Beckley is the only shop in WV that has a kiosk. Not sure what part of WV you are located in so that may or may not be an option for you. I'm actually kind of surprised that is the only one in WV. I would have thought you would have at least a few shops with the kiosks already.