I just recently tried a set of Stainless Steel strings.
I wanted to try them because Frank Gambale uses them.
I didnt care for 'em at all. they had a strange friction on the low wound strings (E,A,D,) that you would feel in your fingers. I find it strange Gambale uses them because I find Nickel seems much slick and slinkier for Economy sweep style picking such as Frank does.
Look into the new "Cobalt" strings. I wanna give those a try.