After much research & trolling around the web i've ordered my first pair of X-matal. Juliet's, plasma frames with Emerald iridium lens. The SKU number was 04-114. The site also had the same frame & lens with the SKU number 04-150. When i've checked on the O-review the only difference between the models is that 04-115 production year is 1999 & 04-150 is 2009 but also has the hydropholic coating on them. These have just been delivered to me & I have noticed what I would have to call an excessive amount of flex on the bridge for a new pair compared to ones I have tried on in shops previous. These look like they will be going back & another set being issued to replace them. Can anyone help in confirming what the difference between the two SKU numbers is.