I put a set of these on, over concerns about fret wear with a certain stainless steel string (awesome tone, but my poor frets!). I was surprised that these strings were as bright as the previous strings, maybe because these are fresh ones. They have a really nice tone, and they slap easily, now that I found Fender's setup guide - I was setting the relief too high :) Being nickel wound, they feel really comfortable, and not "sticky" like new steels can be. The 2-pack is good, too, pretty much half price on each set, compared to what some strings cost.
I contacted Gibson to see which strings they recommended for the Gibson Les Paul Bass and they said they use D'Addario strings exclusively (.045 - .105). They sound excellent and feel right under my fingers. I will continue to purchase this string set for my main bass. After all if Gibson uses them, then you know they're good strings.
Excellent price on the twin packs, and GREAT service from JustStrings - ordered on a Monday morning and had the strings in hand on Wednesday (NH to ID in 3 days!).