Following up on my question from this summer... I ended up buying a Felt Endurance bike, mounting 33mm Cx tires on it (I think I could go up to 35mm easily, and maybe even 38's) and did 7 races this fall. A few had some muddy sections, but none of them were really muddy. The bike felt great - I don't think I had a worse time in tight corners or up steep, slick hills than others, but maybe I don't know what I'm missing. Thanks for the advice.
Oh yea for sure. If you can get 35mm tires into an endurance bike...you're good to go. Rethink it when you get to cat 1 maybe lol