If you want a higher end model you can go to cyclocrossworld.com and get their empella frameset. From there you can build it up with their shimano component package.
Your best bet might be to just go to your LBS and see what they have to offer. Who knows maybe they will order one special for you. Also at your LBS you'll get a better fit as cyclocross bikes tend to fit differently. Good luck on your search.

~Mike