I try to hit them all, but the most consistent results come from the smaller charity shops in the less urban areas. The exception to the "less urban" rule is a couple of small shops in the "gay" area of Seattle (Capitol Hill). For obvious, stereotypical reasons, those have better stuff most of the time, and it's usually better taken care of. However, a few of the really good hits have come from the big shops that are usually a mess with nothing worth taking. The CB suit and the shoes from the other day both came from big chain shops that rarely yield anything good. That's why you really have to be persistent. I rarely go through 3 shops without buying anything, but it's not always anything good. For example, I sometimes buy ties that I like (narrow, dark colors, with small patterns if anything), suspenders, trashed once-expensive shirts that I can cut the good buttons off of, etc. The good finds are only about a 1 in 6 shot or so, but sometimes I get on a roll. I've gotten pickier lately too, which is a good thing, since I am running out of room for stuff I eventually will flip on ebay.