'Helicopter' or 'aircraft' = ok. Pretty much anything else =
.
Bravo,
Bravo.
Abbreviate to "heli" if you must or "helo" if you're ex-Navy.
Back to the original question ... I like Schweizers, they're cracking little helicopters that are ideal for training. They're forgiving and manoeuvrable. They ain't quick but who cares when you're doing doughnuts at ten feet. Similarly, I have a soft spot for Jet Rangers ... they're not the fastest machines, but they have character.
Just like my Bonneville
Cheers
Whirls