There are way too many posts on rsd and on blogs about cleats. Here's mine... I read a comment over on Frisbee Spew where Heacox says he prefers the synthetic uppers they are putting on cleats these days. During Summer League EOS, AJ trots out with his new cleats and shows them off. "Kangaroo," he says. Here is a gratuitous shot of AJ modeling his Puma Kings. AJ and I agree on one thing, coed sucks...no, wait. Kangaroo is King. The comfort scale in cleats goes like this (worst-best): synthetic, cow leather, and kangaroo leather.
I remember the first kangaroo leather cleats I got, some Adidas TRX 3's. I couldn't believe how good they felt. Then, of course, Adidas stopped making them. I switched to the Nike Talaria's, after hearing how amazing they were, and I was won over (not saying much since Adidas stopped making my beloved TRX 3's). I loved the traction I got and how light they felt. My feet paid the price though, as I started getting blisters and blackened toenails again. The Talaria's used Nike's synthetic upper, but I'd always had problems with Nike's so I just attributed it to that.
The Talaria's synthetic upper ripped after 3 tournaments. Thankfully, Nike has a great return policy. If your shoes tear or malfunction, within 3 years of their manufacture, Nike will 'replace' them. Generally this means they'll give you the MSRP of the cleats in the form of a Niketown.com gift certificate. Unfortunately, it takes a while to ship them there, have them inspect them, get the gift certificate, order the new cleats (hoping they have them online), and have them shipped. Regionals was coming up and I needed new cleats. I ended up getting lucky, I found a pair of Nike Mercurial Vapor K's. Basically the same shoe, but made from juicy Kangaroos. Gone are the blisters and the blackened toes. They've lasted longer than the Talarias too. The kangaroo stretches, which makes them more comfortable and durable than the synthetics. They are slightly heavier (.6 ounces), and a bitch to find though. I only wear mine at tournaments (I have an unlimited supply of Talarias from Nike for practice), and they're still going strong. I just bought a backup pair off Ebay.
Most of Adidas top-of-the-line cleats seem to be kangaroo, but Nike (and Gaia) seems to be sticking with the synthetics. I'm sure the Mercurial Vapors, Vapor TDs, Speed TDs, Super Speed Ds, Vapor Jet TDs and Total 90 IIIs are great and all, but I'll stick with my Mercurial Vapor Ks (if only to help the kangaroo population problem.)