The 2011 box was actually the cheapest alternative for me, though I'd really prefer the 2002 editions.
Are you talking about the US versions?
The 2007 box set has terrible packaging. The green plastic dvd cases fall apart after using it a few times according to many reviews on Amazon.
I'd rather have the original 2002 silver season boxes. They might be bulky, but they are really durable and look really nice on a shelf!