There's an overview thread of the Superior Spider-Man run, but we don't really have a poll about the Big Time era that came just before it.
I started a similar thread about the Brand New Day Era, but the Big Time is different, as Peter Parker got a job at Horizon Labs, and Dan Slott became the solo writer (for the most part.)
To explain the potential scores, as it's possible for one man's B to be another man's C...
An A+ is the highest score. It's meant to be pretty rare, an indication that this run is up there with the best of the medium (Alan Moore's Swamp Thing, Stern's Amazing Spider-Man, Love & Rockets, etc.)
An A is impressive, but not quite on that level. It's among the best for the character, but not the best ever in comics.
A B indicates that the run is good but not great. The majority of the material is still worth rereading. In terms of quality, it's largely a success.
A C is pedestrian. It's neither good nor bad, and most of the material is probably not worth rereading.
A D is poor. It's a flat out failure. Most of the material isn't worth reading in the first place.
An F is worse.
It's also possible that some of the people here might not have an interest in purchasing a 53 issue (and that's not counting the tie-ins) comic book run, so I left another option for those posters.