Love it. We're still playing it. 3.X era had alot of stinkers in the glut, but there were also many many gems out there. We love playing in Ptolus......
I'm not so sure: I think the line between setting and edition is an interesting one here. Ptolus was Monte's home campaign and influential on the 3e ruleset. Obviously as a setting ported to 4e, it loses much of its edition roots.Case in point. I love Ptolus too. But Ptolus is a setting, not the core 3e D&D ruleset. Ptolus is the setting of a 4e campaign I'm currently playing in.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.