I think Pathfinder pushes 3.5 in some good directions, but there are no groundbreaking changes.
If you like 3.5, and there are a few things you would like to see changed and improved, then Pathfinder is a solid product, and has beautiful art!
If you are looking for drastic revamps of the system, aka completely balanced high level combat, fighter/mage balance, then you may be disappointed.
If you prefer 3.5 over 4e and want to stay current, then Pathfinder is a solid way to do that.
If you like 3.5, and there are a few things you would like to see changed and improved, then Pathfinder is a solid product, and has beautiful art!
If you are looking for drastic revamps of the system, aka completely balanced high level combat, fighter/mage balance, then you may be disappointed.
If you prefer 3.5 over 4e and want to stay current, then Pathfinder is a solid way to do that.