Incredible, Fantastic, Perfect... but expensive
I personally don't have a set, but I know someone who does, and he loves it.  It works just fine, as far as I can tell, but geez... $170?  In a day and age where I could just send a text message, it is way too much for the price.  Sure, its nice and beautiful and a bit more meaningful than just a, "Hey, you up?"  But I don't think it's worth $170.  If they could bring that down to $50, or even $70, I would not hesitate to buy them, but as of right now, I'm going to have to hold off.
Rating: 4 stars