I bought this goggles about a month ago and I gotta say they are awesome. I previously wore the Speedo Vanquisher and TYR Blackhawk and while they were adequate for practices and racing, they pale in comparison to the vanquisher. Just my opinion. Probably the best thing about the fastskin goggles is FOV and peripheral vision they give you. I soley wear this when I am swimming laps or at practices, because of how good they are. Even though I haven't sped up from these goggles, I do feel more control on my stroke, especially butterfly and freestyle, probably because its easier to see my arms moving around me.PROS-The FOV is wonderful for fast swimming-Mirrored: These things work great outdoors-Shape is nice and compact with a very low profile, which will reduce dragCONS-Price: $75 is very expensive. Wait until these are on sale-Fitting with the IQ fit strap is annoying with little instruction on how to do so.