Going from my regular strings to the Black Beauties was like going from using a wood baseball bat to an aluminum one. If you can make the adjustment, they'll work. But for me, They feel loose (possibly because they are roundcore) and the coating feels cold and tinny. Very bright but I never hear the wood on the bass neck. its all string. I'm sure somebody will love these strings..but I definitely won't ever use coated strings again
Otherwise, if you do buy these, they're quite bright, considering the coating, and although I prefer hex-core, these are better suited to lighter-handed players who bend strings often. They're very articulating!
I'd DEFINITELY buy these on a regular basis (a set every month), if they were priced about 30% lower. I only buy them on VERY special occasions (about once per year) at this price. Cost is a serious factor to players like me who change strings often.
I've used several different types of DR strings over the years and these are awful, just awful.
If you do any sort of fast sliding you'll risk burn from the friction. The string feel for the right hand has a drag to it and if you look at the coating too hard it will come off. In fact my fingers were black from the coating wearing off after every show.
On top of it the tone is even worse than the Sunbeams (which I pulled off after five rehearsals and a gig).
I used to love DR strings but I think I've gotten over it. The Sunbeams and these have cured me.