Most stable would be pretty much every weekly released so far for 5.0.2 but I would go with latest build released for 5.0.2
For gapps u can use any I would go with minimal and pa gapps and slim gapps are good too!
Tks A lot!
But i tried to install the las one (full april) and ****ed up my phone... I tried to install gapps and got error status 40 with pa gapps and error status 7 with slim and minimal.
Everytime i turn on my phone, i only can see a message "some google servçe stop"...