It really depends on your goals. I ride high pressure narrow tires on my road bike, but the wide tires are also popular on commuters. For some reason Kenda has never been a super popular brand, at least with high-end bikes. I don't think they use any special flat resistant kevlar belts or similar. But, the rubber should be thick enough to give some protection.
My opinion is that your tires are the only thing between your bike and the road. Spend a little more money and get
some tires that have a Kevlar layer. Premium tires mean fewer flats and longer tire life.
I've ridden a set of Origin8 Elimin8er tires until they're very bald over the last 2 summers, and a bit over the winter. Last thousand miles, almost no tread, and no flats.
They run $20 to $30 per tire, and are supposed to have a kevlar belt. I think the Termin8er has a similar kevlar belt, but with more tread.
The Elimin8er tires are a bit on the heavy side and I've seen mixed reviews on them, but I've been very happy with the ones I got.
If you hit $40 to $50 per tire, you can get the next step up, Armadillo, Gatorskins, Gator Hardshell, Conti 4 seasons, or Schwalbe Marathons. However, it is also a big jump from a $30 a pair set of Kendas to $100 (or so) pair of Gator Hardshells or others.
Again, it depends on the person and the riding. Some people put few enough miles on the tires that they go bad due to cracking rather than actual punctures.