These are just the best roundwounds on the market.
I've played daddario, Ernie Ball slinky's, DRs, rotosound, ...
In terms of feel & sound they're just untouchable to me.
Strings are a personal thing, and it's a subjective matter.
But one objective thing is the lifespan:
Professional players or bassists that play daily will benefit from these.
For me, they keep a good and snappy and lively sound for 6 months.
And also, after 6 months they still sound good, just less snap and treble.
Uncoated strings last 2 months maximum, feel sticky and loose all the tone after a while...