I have been riding Kenda tires for a year now, and I think they're a great combo of durability and smoothness. They make several 700x23c road tires (the "kriterium" comes in 25c, too), and several commuter tires (I have the Kwick Roller Sport on my commuter) that come in larger sizes (26c and up). They all have some degree of flat protection (depending on what you get).

I found the road tires to be a great compromise- they are durable (not so much as something like a conti "gatorskin"), and they have good grip & a smooth ride (though not quite as grippy/smooth as a conti 4000 & the like)


-Oh yeah... and I still like them, even though I'm riding for a different team next year