Can you go into a little detail about why? I've been considering one of the many sdn options and it's tough to find much information on some of these newer ones.
It looked good at first but it has a lot of subtle bugs that aren't fixed, the upgrade process is completely unusable and it is badly documented and has very limited debug output when something does not work.
Not my reply, but I’ve also had mixed tests playing with Netmaker. It’s a project I really want to like, but getting clients to work together is sometimes finicky. It’s a young project, so maybe the kinks will get worked out. I do like the admin UI.
Another competitor you might be interested in is teleport.
You can self host but it's a bit convoluted to get to the documentation so I posted a how to at the very bottom of this replay. It's very easy to setup and is free as in beer as long as you don't connect to any of their cloud stuff.