I like my fridge. It cost me $50 on craigslist, holds 6 kegs, needs no temp controller, and it's far easier to put kegs into than a freezer. Also, you can thru-mount taps instead of building a tower, (although you can thru-mount on a collar too). I also store glasses and hops in the freezer, (yes, I like my glasses cold, hush).
Disadvantages: While it's easier to get kegs into, it's tougher to get kegs out of. If a keg at the back of my fridge kicks, I have to pull out the keg(s) in front of it to get it out, whereas they are all equally accessible in a freezer. This is the only downside I can see.