I have a hate/love thing with Tim Ferriss, but he often knows his gear well. I got the Aqua Sphere Kaiman goggles. I found my Speedo Futura Plus goggles a solid meh; the straps would always slip up during each swim session, so it was always a hassle to get them not too tight and not too loose. Recently the straps started to slip during my swimming, slowly starting to leak more. The Kaiman are great so far, they have a much better system for making sure the strap stays exactly the way I like it, and they're noticably nicer to wear.