Most stable and feature such ROMs currently?

My wife has a sm-t320. Currently running a nightly CM build from February. Tried to download and install recent nightly but play services kept force closings so i restored a backup. I don't have time to research, install and check various ROMs mostly because she hates when I do it but I was given permission because WiFi keeps dropping but only on her device.

Suggestions would be helpful.

Thanks!