I just ordered an ultrathin MXH anti glare protective film, custom cut for my display from www.photodon.com
. The MXH film offers the best transmittance for an anti glare film and is suitable for HD quality use so it shouldnt impact on image quality. I thought it was a bit expensive though, mostly due to the shipping to Ireland ($23 for shipping, total of $39.50). It probably wont arrive for 3 weeks.