I'm actually in the market too. I currently have a ~15yo chest freezer that we use for frozen food. I hate the thing because it is NOT frost-free and has about 3" of ice packed in it. We can't defrost the thing because every time it gets low enough to consider unloading it, someone buys a crapton of frozen food.
My idea is to buy a shiny new frost-free freezer for the food, then turn the chest into a conditioning chamber. The fact that the current chest is not frost-free would be a non-issue. -Solves two problems.
However I've noticed that frost-free freezers tends to be uprights which doesn't bother me for food, but for some reason the uprights get pretty honkin' expensive. :x