the hv30 has bluetooth?
can't find any info on that. If google doesn't find it, it doesn't exist ;-)
Best wireless within reasonable cost for these camcorders is made by Sennheiser, but it costs more than the camera
My HV20 solution was to just get a long wired audio-technica lavalier that has about 15 feet of light wire. That way I don't have to haul all sorts of receivers and transmitters. Ultimately, I barely ever use it, but stick to the external shotgun DM50 or whatever the model number is. That microphone works quite well, mounts very quickly after you pull the camera out of the carry pouch, and it has handled the abuse of a 20 day John Muir Trail without a single hickup. I don't carry the lavaliers any longer.