Sgts Mess is better than Officers.
Both are better than NATS [no booze at all in NATS].
Free is the only way to ski, paying for it is just stoopid [unless they try and make you ski UP hills].
NATS pays better.
They all have their good and bad points, it's simply a case of what floats your boat. No-one has ever [to my knowledge] done the civvie controller thing then gone military, so if you fancy doing both, you're heading in the right direction.
Good Luck