I personally opted for kbin.social - I like the UI more, I like the community in the kbin-specific threads, and I like that I have the option to follow Mastodon users and interact with the whole micro-blogging side of the fediverse as well as using the "threadiverse" (Lemmy, etc). I think the occasional issues are bound to happen regardless of your instance, purely because it's such a new and growing platform. kbin's largely been rather stable, though.
The biggest downside for a lot of people is that kbin isn't supported by most of the mobile apps yet. Personally, I don't mind this - there's a PWA (progressive web app - essentially just a fancy bookmark to the mobile site that keeps it in its own unique browser instance with the tabs, menus, etc, hidden so it looks like an app) that works really nicely. The mobile site is really nice to use in general, so I've no issues just using this until a killer app comes along.
You have 1680 reputation points, at least when I view your profile via kbin. kbin does show reputation totals, unlike Lemmy.