Glass door vs. stainless (extra $$) or applied cabinet panel (extra $$ from your cabinet manufacturer + extra for the installer) is one difference. 2 wine shelves vs none. No on the door shelves with the glass door vs. 2 (1 with 2 liter capacity) with the solid door model.

For general beverage chilling, ones with door storage have the cavity easier to access as it's shallower and easier to find stuff. With a 24" deep cube, it's more difficult to access bottled water and canned beverages in the actual body without having to pull out the shelves. It's better suited to horizontal wine storage though, which is why they include the wine shelves, although it's too cold for most wine if you're going to be using it for water or soft drinks at the same time.

Which you pick will depend on what you want to store, and how pretty or integrated you want that storage to be, and which is more important to you, functionality or aesthetics.

Very good explanation. Thanks Holly --just what I wanted to know.