Pros: Good Sound, Verstile, Durable, Reasonably Priced
Cons: Not the best choice for orchestra players who have a bright sounding bass.
The overall tone of these strings is slightly on the bright side. They're not so trebly that they get that raspy sound under the bow, as do The Spirocore Strings, but they do have just enough brightness to them that they can double as both jazz and orchestra strings. They don't quite have the dark chocolatey depth of Flexocors, but on an already dark sounding bass, these offer just enough treble to give real definition to certain notes that may have sounded muddy or, "woofy", in the lower range of these type basses. That same definition offers a certain crispness to the midrange as well. Basses that already have a bright tone might be better served by the aforementioned Flexocors if your emphasis is on Orchestral music.
As I said, these strings are quite possibly the best option for double duty on the bass. Many of "The Hybrid" strings that have come to market as of late, tend to lend themselves better to either "Pizzicato" or "Arco" playing. These, however, are the original hybrid string, and they sound equally good under the bow or the fingers. That's why they are to be found on the basses of Orchestra Players, Jazzers, Rockabilly, and Bluegrass players who tend to play more than one style of music.
Now most people whose emphasis on slap bass are better starting out with gut or nylon, as a steel wrapped string of semi-taught tension can play hob with fingertips and palms that haven't acquired the callouses and dexterity necessary to slap a steel coated string. These tend to sound more "stringy" than "woody", though jazzers will still find that Ron Carter like growl on the "G" of a slightly vibrated E string.
These are most definitely the longest lasting strings in the business. Sure there are plenty of strings out there that can last more than one season, but darned few of them will still have overtones that ring true to pitch across the set. That may be why these are very often the string of choice amongst students and teachers. Very rarely do you get a string that is this versatile and this durable. I've played around with lots of strings, but these are my string of choice, and I play a very hard to fit bass. Oddly enough, it is a 1/2 size bass that sports a dark tone, and a 5th string as well. As I am pretty much retired from playing, I need a good sounding string that will stay true to pitch when it's a long time between gigs. These are just what the doctor ordered.