A Soma Double Cross is another option. I have one, unfortunately not for sale, and really like it. I was looking for a cyclocross/commuter and stumbled across it. It appears very similar to the Cross Check, but tad more affordable. Although it is primarily my crappy day commuter, I have used it for all my cyclecrosss races and gravel grinders. In fact, the double cross and cross check are pretty common for the cat 4 races, and truthfully the last gravel grinder I was on a double cross was there. You will not be out of place on a Cross Check on a a cat 4. Also, when I was having trouble with my road bike, it was used for many of my training rides without skipping a beat. Stripped down, it will hold its own on the group ride. A totally different geometry than a road bike, but after a few days your back, neck and shoulders will quit whinning. Heck, I think this winter it was also used for 75% of my trainer riding. So, essentially it makes a good do-anything bike. If you are getting into cross, it will make a great first option that will make an excellent daily commuter if you get into it more.