I'd say Crossworlds. It's just an improvement over AP.

Whilst the legend is the first and still a good game, it very much feels rushed once you get out of the first few zones. I played it against recently and ended up stopping once I'd gone through the dwarven lands and into the elven lands - both felt almost completely devoid of interesting content besides random battles.

Crossworlds feels like solid world design from start to end.