I have a V6 and I've A/B'd them with the Beyer pads and stock. Bass seems a bit more 'boomy' with the beyer pads, possibly because of the larger size of the pads. Comfort wasn't really improved, the Beyer pads aren't as soft as the stock. The size of the stock pads wasn't really an issue to me, I was just curious and had $20 to burn. Maybe I'm weird, I find my SR80i's to be pretty comfortable too..
They're a great compliment to my SR80i's, where the Sony are lacking, the Grado excel, and vice versa.
Here's a quick mod to make the stock pads more like the Beyers in terms of depth:
Take 3-4 squares of toilet paper and twist them up tight. I originally did this with a cheapo brand, so I used 2-ply. This time it was with some cushy stuff, so I pulled apart the layers and used 3.5 squares for both pads.

Start somewhere and tuck the paper under the pad, it should go around twice.

Pad puffiness increased! Modded pad is on the left.
Edited by burnliff - 1/3/11 at 5:07am