I always played Ernie Ball regular Slinkies on my MusicMan bass, cause I love their bright sound. But that brightness usually lasts only a month and then they get very dull...
Last year, someone recommended the Elixirs.
I was pretty sceptical about the "nano" technology, but got a set anyway.
They did sound a quite bit different from the Ernies when I first stringed them up and they felt strange to my fingers (smooth), so it took a little time to get used to them.
But... I've been playing them for 9 (!) months now and they're still sound fresh. Amazing!
So, if you're tired of buy new strings all the time, give these a try!