I have to agree that I voted for this because it was the film I was most grateful/excited to have available on DVD. The preservation of the film elements should, I think, be considered when choosing a "best" DVD. This category presented the least difficulty for me, actually. The only thing that would've come close was The Simpsons.
However, the extras are nothing to scoff at:
-Audio commentary by Leigh, Thewlis, and Cartlidge (rest her awesome soul)
-New video interview with Neil LaBute
-BBC program with Will Self interviewing Leigh
-The Leigh short film The Short and Curlies, featuring Thewlis