The one issue I have had is some extension that makes their web console not work properly in Firefox. Other than that (which is partly my fault), I have absolutely no complaints!
You might want to look at Hetzner too though. IIRC netcup uses some of Hetzner's hardware and just offers different specs, plans, and prices; when you compare the two side by side, one has plans in between what the other offers so you can pick something that fits your price point exactly.
Server run by the main developers of the project It is not focused on any particular niche interest - everyone is welcome as long as you follow our code of conduct!