Oura or ultra

Sooo I was set on the Ultrahuman until I got on this Reddit lol It’s super expensive to get in Canada & right now oura has a sale where I can get the gold oura ring for pretty much the same price as the Ultrahuman . Should I do that instead? I’m interesting in the caffeine window & vitamin D tracker but is it worth the trouble just for that or should I settle for the oura because it’s more stable and hope oura comes out with similar features?