I use an ancient Astralite. Weighs a little more than the Sennheiser currently available, which is comfortable, but has a much inferior sound quality when plugged into our Garex vscc.
The Astralite picks up treble and mid range better, consequently radio volume can be quite a lot lower. I've noticed a lot of the controllers wearing the other types (incl the Senn.) tend to shout a lot. Not so good for teamwork. Also the Astralite surrounds the ear rather than squashing it. There are double mikes with (tx) noise cancellation built in, which is partly effective at preventing aircrew hearing the background jokes etc.
Curly cords are also terrible because they weigh a lot.And easier to run over with a chair-a major cause of headset (or cable) failure.
My dream is cordless headsets. They can do it at MacDonalds. Or better yet, a mind detector on the radar screen so you just have to shake/nod/smile/glare or look confused at it and a filtered, censored version is datalinked directly to the flightdeck.