Ditto on the Tilley. What I love about it: (1) large grommetted vent-holes that access the airspace around the crown (and there IS an airspace, because the top is cylindrical, rather than rounded) lets enough air in and out that it doesn't keep you too hot in the summer--which often results in the hat not getting worn where it's 115 degrees in the shade; (2) strong attachment system; (3) good looks, and versatility of brim that snaps up on either side, both sides, or none, depending on mood; (4) wide variety of sizes means they make some that actually fit my (large) head.
The one thing I don't like about it is price (usually around $50 U.S., no?) I have since seen a few that are a lot like the Tilley, essentially the same design, for a lot less in various places--Target's carried a few, as has Sportsman's Warehouse; however, I'm now having trouble locating one of these less-expensive versions. What I'm looking for, in particular, is something a lot like the Tilley, but somewhat darker than the off-white one that I have. I've noticed the light color is a bit flashy in the woods, and I don't want to scare the whitetails TOO badly. Ideas?