Well the 05 leather is nothing less than fantastic. It's clearly the best leather ever for Balenciaga. The S/S leather from this year I thought was a hit or miss. The Black was horrid but the Anthracite was nice. Now on the F/W 07 leather, the Black Brief I have has unbelievable gorgeous thick buttery leather but it's shiny. Not that that is bad at all, I just notice that the 05 leather was more matted. I didn't buy any bags in 06 so I don't know how that leather was, but I would say 05 is still the best. It was the most consistant in that almost every bag was perfect.