I run Pasela TG's on my Motobecane - they are 27 x 1. I rather like them. Since they are somewhere around 25's I keep the pressure high in them. So far no flats, but only have maybe 200 miles on them.
I also have Vittoria Randoneur Pro's in 700 x 32 on my Cannondale. So far they are bomb proof. I've put about 1000 miles on them and no flats.