These are, without a doubt, the best sounding and feeling strings I have ever used in my 20+ years as a bassist.
They're a bit higher tension than other strings of similar gauge, which suits me fine. I play with a heavy right hand. And they sound absolutely marvelous!
The only downside is that they die a bit quicker than other strings, so I need to change them more often. If I could afford it, I'd buy a shipping container of these and play a fresh set every day for the rest of my life.