Not to be the terminology police here, but make sure you post the full and correct name of the line you use. There is a huge difference between Amsteel and Amsteel Blue. The difference in breaking strength in the 1/4" size between Amsteel (SK-60 Dynema) and Ultrex (high quality SK-75 Dynema) is 3,000 lb. I think Amsteel Blue is somewhere in between. The difference in price between Amsteel and Ultrex in the 1/4" size is only 20 cents a foot.
EDIT: Just to clarify, breaking strength of 1/4" Amsteel is listed at 6,600 lb. and the same size Ultrex is listed at 9,600 lb. Amsteel in 1/4" is $1.13/ft and Ultrex is $1.37/ft.