Here's an in depth review of the CZ Bobwhite in 20 and 28 gauge. After reading it, I bought the 28. Things have improved since the review was written in 2006; my 28's wood is better than described in the review. Trigger pull was atrocious, but I got that remedied by a local gunsmith. Weight is 5.36 lbs.
http://www.members.shaw.ca/sharptail/CZReview.pdf