My Dad has roughly about 1,500 bottles now and he owns a number of these types of coolers.
My advice is to get one with nice pull-out drawers. Think of it more as a way to display the bottles you really want to drink than as long term storage.
A cool/dark basement is really all you need for long term storage and aging. These wine coolers are more of a luxury, but the ones with nice pull-out drawers are really nice for choosing what to drink. You can use them for aging wines, but they aren't really necessary for that purpose.
Just my 2 cents.