Forgot to mention, but I have searched. I do know they will be a bit bassier, and a bit warmer. My question was about whether or not the SRH440s will sound better with 840 pads or 440 pads, however.   Sorry to be rude. Just trying to seek out my question.  

I've been using my SRH440 for nearly a year now. Music sounds excellent. However, my Shures aren't always comfortable. My stock pads are worn down and cracked. I searched here and heard that the 840 pads would be a good fit and a comfort upgrade over the stock pads.   So I searched head-fi...