I've got an older Clam Yukon that has served me very well for a lot of years, and last year I picked up an insulated Frabill Citadel. It is a lot bigger, so a beast to pull around by hand if there is any snow. I still like the Yukon if I know I'm going to be walking. Otherwise, the side entry on the Frabill is a pretty cool feature, and insulation is great in any of the brands if you can handle the extra heft.