I currently have a Santa Cruz Stigmata, and I had a first Gen alloy CruX before that. My gravel is 80% gravel so I like 40+ tires. The Stigmata is a really cool bike-0 nice ride quality and nimble, unlike longer gravel bikes. It handles more like a Cross bike but with comfort (unlike the alloy CruX). My only knock- no top tube bento box mounts. Hate that.. Anyway, it is a 58 and a little big for me so I'm going to either frame-swap a Stigmata 56 or go with something else (TBD what that is). I think the Diverge is a bit long and sluggish compared to the Stigmata. The Stigmata is fast on the road too, and it does not feel like a super-stable gravel bike. That makes it nicer to handle, in my opinion. It is stable enough but when things get tight or steep, it is fun to be on that bike. If you have enough road as well, consider the Stigmata. If the darn thing just had top tube bolts for the bag, it would be a no-brainer. That said I have some slim bags that do work on top and bottom of the top tube.