Big problem i cant decide between 2 string types. Most of my guitar playing life i have used DR tite fit, but a friend gave me a set of sit's power wound and i want to know some of your opinions, which should i use?

consider the following:

-I play modern rock/alternitave metal. Think sevendust,chevell, tool, mudvayne,that sort of thing

-I have a gibson les paul studio ( the good one with maple top) 1993

-almost everything I play is in some form of dropped tuning.

P.S. both string sets are 11 gauge.