I use them with my Gibson Les Paul, and they are really great.
I tried Gibson picks for the first time while I was at Gibson Custom Shop in Memphis (sadly, it's closed now) and liked them a lot while trying some gorgeous guitars there (that I couldn't afford...).
The kind people there let me take one as a gift, and I bought (a lot of) them afterwards.
The good thing is that they last a long time, and you can just rotate them when they're worn (they are triangle shaped, sort of).
The medium weight is ok for me, but you can find them thinner or thicker.
They sound good and are comfortable and useful, in the end that's all that matters.
Pros? What I've written before.
Cons? There are no cons I can think of.
Recommended!