Just exactly HOW compact do you need it to be? The Sanyo was what I was going to go with originally but they're either super hard to find, or are expensive as hell - what I did was bought a chest freezer from Lowes for less than I would have paid for the Sanyo and I have room to grow now too. I thought about the 5.0 cubic foot one (which will hold 2 cornys without a collar), which is relatively compact and not too expensive, but when I got there they had a sale on the 6.8 cubic foot one for just $30 more (this was a few months ago). The only real added expense you will need to add if you go the chest freezer route is a temperature controller ($60 for analog, $120 for digital).
You should look into it. Again, I don't know exactly HOW compact you needed it to be.
Hope this helps.
"Offered a Bud Light, and a glass of water - I'd drink the water. You only have one liver, don't waste it on bad beer." - Brock Wagner