I have purchased these strings many times and they are some of my favorites.
These strings are very punchy and aggressive, and cut through the mix very easily and I find they work very well for rock, punk and metal, maybe even slap!
HOWEVER,I noticed that after 3 months or so they started to get a lot duller. If you store your bass in a warm place this doesn't happen but if you leave it lying around expect them to lose some of their tone.
All in all very good strings for PUNK, ROCK and METAL.