Also have a VinoTemp E line.. which is the least expensive and it is in the garage as well.. It is not designed as a piece of furniture for the house.. it is purely utilitarian.. mine is double deep and the racking is 12 x 17.. so holds 408 in the racks and probably another 40 or so on top....
I got all my racking Chard/Burgundy size.. that way you don't scrape the labels off any of those fat bottles, Syrah included. Also, I have big hands, so I couldn't even reach in the regular racking to get to the back bottle in the racks.. so keep that in mind.
I was lucky to be able to get a floor model.. if you talk to them, ask them if they do have any floor models with oversize racking. I also upgraded to the larger cooling unit since we live in So CA and it gets hot in the summer...
To date, and I'm knocking on wood, I have no complaints about the unit. I'm glad to have all my stuff at home and not 10 miles away in a locker.
Here's something similar to the unit I have..
http://www.vinotemp.com/600-e-p-75.html