Thanks, I just looked at the Cardo units, and it looks like the QZ might be just right, since I don't ride with a passenger, or with groups.Cardo Scala G9x Powerset has plugs where you can plug in earbuds. I use the helmet speakers on my modular helmet, but I use earbuds on my half helmet. Just my own preference.
I tried the LG HBS-700 bluetooth headset, but the audio quality was really poor as the battery got low. Other than that, they worked pretty well. One warning: they are really loud when you first turn them on.