Originally Posted by MinnMan

This is a very helpful thread.

I am new to riding gravel and bought a Masi cxgr about 2 months ago. As it's name implies, it's meant to be both a cx and gravel bike (I bought it for gravel grinding; I have no interest in actual cx). The stock tires are 35 mm Kenda Slant Sixes, which as far as I can tell are something like a cross between the Small Blocks and Happy Mediums.

Anyway, my impression is that they are really quite slow both on pavement and gravel, though I admit I have little basis for comparison, and so I'm thinking about swapping. My rims won't take a tire smaller than 35 mm. This list has given me several ideas for further investigations, maybe starting with the Clement X'Pior.