Are they quieter than they used to be?
I thought the smart money had switched to polarised because (a) they're *much* cheaper to make, and (b) shutter glasses, being mechanical, are both noisy and prone to breakage (the example I saw was someone prone to jump off your face.. it was a few years back though and i hope those glitches are out).
Personally I'm not interested until you don't need glasses. £100 for glasses? I don't even pay that for real ones..