The Nickels will maintain there qualities a lot longer then the SS strings. You will get 6X the life out of nickels vs SS. That said, the steels don't "die" in 3 weeks they just "calm down" as an example/
I personally like the steels brightness, especially in metal music but I have found I like the Nickels more so on my Jazz bass.
Give Payson a try for more options. Its worth the exploration. Great strings. The reduced core are a monster hit. I love the SS offering.......
Hmmmmmm! this just got me thinking.... The reduced core on the fretless?!?!?! Might have to try that out.