LTS just means Long Term Support in case you weren’t aware. It means no new development is happening, but security exploits will be patched as soon as they arise.

If you just want stability, LTS is the way to go. If you want all the cutting edge bells and whistles and are okay with potentially some instability (but probably not much) then use the latest version.

If your device isn’t connected to the internet during general use then I wouldn’t worry too much about updating anything. Security fixes aren’t important if there’s no way to connect to your device.