Option1 Banner 160x600
zipped file size: 19k

Option2 Banner 160x600
zipped file size: 22k

Option1 Banner 300x250
zipped file size: 15k

Option2 Banner 300x250
zipped file size: 19k

Option1 Banner 728x90
zipped file size: 12k

Option2 Banner 728x90
zipped file size: 14k