the martin strings are a classic in terms of tone, they're my go to in the studio for recording acoustic guitars. I put a fresh set on all the guitars i record and they shine through the mix every single time.
No cons found yet, maybe they can be a little bit too much in terms of tone if the acoustic you're recording is just a backing track and not a the main one, in that case you may wanna be careful in mic positioning and sound processing.
Great strings, great sound e durability.