Pros - Great "close to steels" tone, feel, and longevity of tone
Cons - Not the cheapest out there. Not the most expensive, either.
These strings have a "brighter than Nickel, less raspy than Stainless" quality to them. They do not shred your fingers or frets, stay in tune, and hold their tone really well. Tension is great; enough "bounce" without ever being floppy. I personally prefer the "piano" tone of stainless but hate their abrasive quality coupled with the quick dropoff of tone. These strings, in my estimation, strike the perfect balance between the tone of steels and the playability of Nickel wound.