GHS Pressurewounds are a really great string. To me, they have a little bit of that warmth that a good flat has, but has enough treble for just about any style of music. Like a well aged set of rounds in terms of sound but without the intonation issues of worn rounds. I've even heard slappers on it, and it sounds more than acceptable doing it. I can't think of a more versatile set of strings. Pretty affordable, too. They also feel pretty good on the fingers when sliding (I slide a lot).
I don't like most other half rounds because they tend to be ground wound, which to me are the worst of both worlds. Pressurewounds are the best of both worlds because they have that round presence, flat bottom end, round's ability to provide a pleasing grind when you dig in, but with the flat's lack of string noise. Ken Smith's Compressors are similar but much more expensive. That said, these days, I feel like I don't need the best of both worlds because I only want one world, and flats do it for me. I actually consider myself a relatively busy player, but with my Precision Flats, I feel like I never have to worry about my tone being annoying.