Here's my list of good things:
1. It plays like 3.x.
2. It updates all the characters and gives almost every class something at every level.
3. Streamlined mechanics on grappling, tripping, etc.
Here's my list of bad things:
1. Monster stat blocks way too big.
2. Still has the same problems at high level play that 3.x did.
3. Too many skills.
Still, despite it's warts and all, for me, Pathfinder is my favorite system and I really enjoy it. However, if I want to a "back-to-basics" game, C&C does that for me. The beauty of these two systems is that they are very compatible with each other.
Of those bad things, the only one that I totally agree is bad is the high level difficulties.
In regards to monster stat blocks, I would like to see two versions - one for peons, mooks, thugs, etc. the other for big monsters, major villains, and henchmen. So... 50% agreement?
Pathfinder actually has just about the right number of skills for me.
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For the OP:
I will also add that the Advanced Player's Guide adds means to radically customize characters in the form of archetypes - if you get Pathfinder then I
highly recommend getting the APG. For me it is where Pathfinder became its own game, not just D&D 3.P.
It is a game changer, not just an addition.
It allowed me to create a world that I wanted - witches, and their various archetypes in Ultimate Magic, became the default (and most distrusted) spellcasters in the setting.
The one thing that annoys me is that Pathfinder kept the square/circular base sizes from 3.X - I like bases to be rectangular for critters that are longer than they are wide. (Horses, centaurs, dragons in particular.) Ignorable, but annoying.
The Auld Grump