It is hard to get a fridge with a flat bottom all the way to the back. Sears has one (fridge only, no freezer) for about $600...
This is the fridge I got for conditioning or aging up to 3 kegs, and the top shelves are packed with bottles, glassware goes in the door, and has a Johnson A419 keeping an eye on the temperature.
Also have one kegerator which holds two kegs, one chest freezer for hops and bags of ice (used during the chilling process) and another chest freezer on Johnson A419's (one for cold, one for heat) for fermentation. Luckily my wife likes brewing and we've got plenty of room in the basement. I'd tend to count the kegerator as it doubles as a conditioning fridge when there's no room left in the upright, so I guess that's 4 for me.