I have a titanium St Moritz. Durable for the money. It was very reasonably priced. I bought it a an outdoor gear store. It has a screw down crown, good sapphire crystal. Not a big popular brand, but well made for what you pay.
another watch made for the outdoorsman is REACTOR stainless steel and sapphire crystal the lugs and bolts are agret benefit for the sporty guys. check them out reactor.com