Rode w/3 different types and psi ratings. All the Nu-Teck brand. Still believe them to be a workable alternative for urban commutes of 10 miles or under. One will be slowed 1-3 mph depending on terrain and will be guaranteed no flats, but they do have drawbacks. They cost alot. They WILL come off the rim if not properly sized. The ride is bumpy and they 'feel' strange at first, but one gets accustomed to the 'squirrelly' feel. If you weigh over 200 lbs, forget it. You'll break spokes and want to send them back. I'd still be using them except I ride long commuting/utility distances, live in a hilly area and got tired of the grind. Because of the rolling resistance cycling became a chore and I started hating to ride. But, I hated flats more, so I gritted my teeth and kept pounding away. Then I had a mechanical situation on my main commuter and had to borrow my wife's bike for a couple of days. It's a 3x6 Specialized Crossroads Hybrid w/32mm pneumatics...DING!

So, I decided to go back to pnenumatic tires. Lurked here on BF -Commuter, General, Touring, Car-Free, etc. and decided the best all-around option were the Schwalbe Marathon Plus. Gatorskins and Armadillos were seriously considered as well. So, now I've got 3 sets for my commuter bikes. On my primary commuter I've got over 7000 miles w/one flat and one slow leak. It's a Motobecane Fantom CX w/28mm SMP's. When the slow leak developed I got a new SMP for the rear and have over 1000 commuting miles on it w/no issues. The front tire has over 8000 commuter miles w/no issues. The other 2 bikes are both conversions used both as commuter and recreational rides. One's a singlespeed and one's a 1x8 roadie w/barend shifting. Both have SMP 25mm. Over 2500 combo miles on both and though I've had pinch flats and rim burrs puncture the tubes the tires have been unscathed. In every case the loss of air can be traced to some negligence on my part, not the tires.

So, for the same money I'd recommend staying w/pneumatics, getting SMPs and a Kool Stop tire lever as you'll never get them mounted without it. Use a little dishsoap on the bead, too. Carry the tool w/you in your tool kit and get a Topeak Road Morph w/guage frame pump. Anxiety-free commuting.