I'll breath my life into it... I'm playing through Ivellon at the moment... Its at the top of my list right now mostly because I feel smart after figuring out all the secrets on how to get there. Lots of fun. Ruined tail took me a while to get into, but was pretty enjoyable nonetheless. I also kinda like the Mighty Umbra. I know it hardly matches up to some of the others mentioned here, but I really enjoyed it. Maybe it was just the relief after finishing it.