This would be great info. I started a list of what I've bought and tested but something like a wiki and some sort of sortable list to better...
What brand or make of harness/underwear are you using? We bought the Deuce from Spareparts Hardwear awhile ago and it's been great for both of us....
There are a ton of vac-u-lock dildos on etsy: 1) https://www.etsy.com/shop/Uberrime 2) https://www.etsy.com/shop/Sinnovator 3)...