This is a bit (very!) belated but my BiL and SiL have an OnlyCat and absolutely swear by it. They’d also been through the choosing between the two phase. They said while OC is more expensive, it’s fully integrated rather than fitting it to an existing flap so is a lot slicker, and the team are UK based for ease of shipping etc and they were super responsive when they got in touch with questions. Apparently it’s now at the point of immediate shipping so no more long delays on delivery.
They’d considered the zero mouse but it looked a bit flimsy/3D printed from the images, so they weren’t convinced on the quality and the team didn’t respond very quickly when they got in touch with queries. They’d also seen a fair few people reporting issues with it not working when they were looking (a bit like HedgeWitch’s issue), but they may have been sorted now - no idea about the 2.0 though. Annoyingly, because it’s a German company, a lot of the groups/comments etc were in German so they had to do a lot of google translate in their research (tbh BiL loves researching stuff like this so he was in his element).
ILs had a minor issue with one of the settings on their OnlyCat and the team sorted it remotely almost immediately after a fb message they sent fairly late in the evening, so definitely can’t fault the customer service! They had a SureFlap before so it was a straight replacement and easy enough to fit. It’s another small start up team but they’re apparently really engaged - bit of a relief because they’d bought it not long after the crowdfunding phase and you just never know if it’s legit!
ILs are also part of a customer fb group where there’s a really supportive and active community that answers questions and shares cute/funny videos of their cats etc and tips for installation and settings, so that’s a bonus too. They’ve had theirs for a few months and haven’t looked back!
Did you buy one in the end @cookielove?