Originally Posted by MichaelW
The Schwalbe Marathon range are popular and come in 26 x 1.5"
The Plus version is a lot more puncture resistant but heavier.
I run the 26x1.75" SM Plus on my tourer with zero flats. They are certainly heavy (~1kg each) but I gladly trade the weight for less flats on the road. When my current set needs replacing, I will probably opt for the 1.35"