There are many makes/models of 'flat resistant' cycling tires. After about 3 mos. of reading, investigating, looking through reviews, seeing the manufacturing process on the respective types I ended up selecting Schwalbe Marathon Plus 700x28mm for my primary commuter/utility bike. They were a ***** to mount and I thought I'd made a huge mistake. 16,000+ miles on this one set over the last 3+ years has convinced me they may be the best all-around commuter/touring/utility tire on the market. I've got 700x25mm on my recreational rb and my fg as well. Combined they've given me 20,000+ miles w/one slow leak and 2 flats, one of which was a blowout due to a weak spot in the tube on a real hot day on new asphalt. Nothing to do w/t tire. Haven't noticed any age cracks beginning on the sidewalls and I inspect my tires frequently.

The only negative is the rolling resistance, but as I'm not a speed guy anyway they suit me just fine. Under load what's the diff? Even on my rb I do centuries, 50s, etc. I'm not a social cyclist, so there's no pressure to 'keep up or get dropped'. While I've got no experience w/other brands/models I would recommend these to anyone interested in as flat resistant a ride as one could want short of Nu-Teck airless.