Somebody needs to tell you. Might as well be me...
The question you have asked, "What strings..." is not a question at all. It's a disease. You'll find an answer and you'll be happy with your string choice . . . for a while. Then, you'll hear someone else's bass, and you'll wonder, "what if I..." Before long, you'll be arguing with yourself:
"Those Titanium Slaps sounded so GOOD!"
"Yes, but you just paid $175 for the Evan Pirratzoes!"
"But it'll be WORTH it to finally find MY sound!"
"Sure! Some people don't mind food stamps at all!"
"But that guy on Bass Grass said..." :
"Doesn't mean it'll work on YOUR bass.
"Hey, what about GUTS? Pure sound, easy on the hands. Traditional, too."
"You might as well flush your money down the toilet..."
Welcome to the Ward, Fuzzy.
FWIW, I really, really liked the Silver Slaps and wore out several sets on my Engelhardt.
I tried the Innovation Rockabillys, loved the feel, hated the volume loss on my bass.
Also wore out several sets of Obligatos, but they wore out too quick for what they cost - about 6 months, max.
I'm currently using Spirocores. Love the sound, but they're probably not what you're looking for tension-wise.