The brightest, clangiest, longest lasting strings I've used are Dean Markley SR2000's. (And I didn't like Blue Steels.)
I usually buy two sets. When one gets too dull, I put on the new set, then boil and store the old ones in alcohol. Next time, the first set goes back on and I boil and store the second set.
They will last me two years easily.
Dan Torres once said, "There are three ways to make an amp sound better. Make it louder. Make it brighter. Make it louder and brighter."
May my ears are like Dan's. Maybe it takes loud and bright for me to be able to hear it. (Kidding...my hearing is great.)
When I first heard fresh roundwound Rotosounds on a P bass through an SVT, I was spoiled. Since the early 70's that was my starting point for bass tone. Thanks to Rick Clark from the Tongue Band from WI.