How much do you think goggles affect speed?

So lets start a discussion here, how much do you think the type of goggles affect speed? Speedo has that new 3 piece system where the new goggles, some call them "space goggles", are incorporated in improving the swimmer's speed. www.goggleblog.com/.../Speedo-Fastskin-3-event.jpg Most swimmers in my area have the vanquishers. As the years progress and older swimmers give new swimmers advise, I have heard things like: cut the bands of your racing set of goggles really short (to get rid of the extra weight and drag), and always put the goggles on before your swim cap (its supposedly more aerodynamic). I've also heard that you want to get the most low profile goggles possible. So what do you think? Do you have any preferences with your goggles that have given you perhaps a .05 second cut? Or do you think this all may be a placebo affect? how much do you think the type of goggles affect speed? if you're referring to drag & if the goggles have a streamlined profile, NOT much BUT if your googles fog up in a race and you miss a turn or turns or if they come off or flood when you dive in it could spell trouble The invention of goggles allowed swimmers to train much further and get faster

So lets start a discussion here, how much do you think the type of goggles affect speed? Speedo has that new 3 piece system where the new goggles, some call them "space goggles", are incorporated in improving the swimmer's speed. www.goggleblog.com/.../Speedo-Fastskin-3-event.jpg Most swimmers in my area have the vanquishers. As the years progress and older swimmers give new swimmers advise, I have heard things like: cut the bands of your racing set of goggles really short (to get rid of the extra weight and drag), and always put the goggles on before your swim cap (its supposedly more aerodynamic). I've also heard that you want to get the most low profile goggles possible. So what do you think? Do you have any preferences with your goggles that have given you perhaps a .05 second cut? Or do you think this all may be a placebo affect? how much do you think the type of goggles affect speed? if you're referring to drag & if the goggles have a streamlined profile, NOT much BUT if your googles fog up in a race and you miss a turn or turns or if they come off or flood when you dive in it could spell trouble The invention of goggles allowed swimmers to train much further and get faster