Larry,
You're my hero if you can actually SING through a headset mic. I've has a bunch over the years, and I can't get the same performance out of them. AS for compressors - I don't use them on my voice either. They limit too much of the expression, and color the tone.
Sometimes, I wish I could have the additional freedom of a headset, but it's too much of a sacrifice to my sound and style. I actually own one, but I rarely use it. Sometimes I do a strolling thing with an acoustic guitar, and I wear it then, or on Halloween when I dress up in my Phantom gear. I doubt that I will ever embrace the technology, as long as the sacrifice is so great.
Good luck with your setup, I use the clamp on stand that Donny has, and it takes less time to set up than a headset. Chocolate & Vanilla again?
Speaking of voices and mics - I'm posting a separate topic on the Voice Prism tonite !