Changed my stock spark plugs because I figured it was about time I did so. First impression was, hello throttle response! It seems to be much more responsive now. Stock plugs weren't horrible I don't think. I'll try and get a decent picture of them up here later if I can get one (stupid flash). By the way....replaced them with NGK Vpowers.

 

They almost always do little better due to the nice sharp edges on the plugs that minimize arc over voltage requirements. But you made a great choice on new plugs.