I agree, I went over to a cap rather than a helmet a few years ago and find I enjoy my riding more. The only time I get a bit worried is on downhills.
http://www.rapha.cc/rapha-cap
Per the OP, "I was wondering what you guys use to protect your noggin's on tour. "
How does a cap protect one's noggin? This is a thread about helmets is it not?