I'm having a hard time deciding between the LTM6 or the T4MO. Anyone own one of those? Basically cotton or nylon.
Yes, I have the LTM6. It's the only hat I've had that is truly bearable to wear in the FL summer.
I got the Khaki with Olive underbrim (you want the dark underbrim to keep reflected sun out of your eyes), and it reflects sun well, the venting on top allows heat to escape and when there's a breeze, the convection evaporates the sweat on my head quite well -- amplified by the fact that I shave my head.
The front and rear retention works very well too. I've been in serious wind -- like being in my friend's Jeep hauling balls with the roof off and the windshield down. Felt like my head was going to come off and I made the mistake of turning my head and off came my glasses (thank God for retention lanyards), but that hat wasn't going anywhere.
The secret pocket in the top is a nice touch. I like that they not only put it there, but throw in a little plastic baggie to keep things dry. A lot of thought goes into their products.
I too have a mastodon sized head, and I followed their directions for sizing. When it came, it was very loose on my head, but after a while it shrunk a bit to being a perfect fit. It's held on by retention straps, not pressure on your head, enhancing the comfort.
As for looks, they are distinctive and like the old time fedoras, they look better as they age a bit.
Nothing Tilley makes is inexpnsive up front, but if you amortize the cost over the years of use, they end up being dirt cheap.