I've had excellent results from my 32 mm Continental Touring Plus tires. Maybe one or two flats over the past two and a half years of regular commuting through the glass-littered streets and paths of Philadelphia. That's compared to fairly regular flats in prior years with 23/25 mm Gatorskins, and to a lesser extent, 23 mm Schwalbe Durano Plus. Of course, some of the new flat resistance may be due to the tire size so not exactly apples to apples.