I use them on both of my 5 string Washburn XB925 basses (fretted, and fretless).
The fretted bass came with a set, which I liked so much that I got a set for the matching fretless.
I liked the grip and bite of them being round wounds, but slightly smoother because they have been compressed. A nicely tight string, but not so much tension that I have to fight with them.
On the fretted, there is a good low B, solid sound across all of the strings, and a lot of resonance transmitted through the neck.
The fretted seems to have thinner gauge strings on it, and I am still getting used to the instrument following a recent neck adjustment to give me some mwah.
They were difficult to find - my fretless set were ordered from Holland, I think.
And the set already on the fretted came with the bass, from Hungary.
I am not a connoisseur of bass strings. I have never tried the main brands. So, I can't really compare them to other brands. However, I like the SIT strings that I have.
Ooh, hang on! One of my Washburn XB500s has a D'Addario low B (0.130", I think). I prefer the SIT low B to the D'Addario.