José, Leon, and all,

Are the Sennheiser IE-3 ear buds comfortable to wear? How do they compare with the more expensive custom fitted ear buds? Do they completely seal you off from the audience, or can you still communicate with and hear them (audience requests, etc)?

In addition to the Sennheiser IE-3, don't you also need to purchase an IEM transmitter & reciever unit as well?
http://www.musiciansbuy.com/sennheiser_300iem.htm

What equipment is actually needed (including total cost) for a COMPLETE pro sounding 'in your ear' monitoring system?

Thanks,

Scott