I really enjoyed them yoga, especially the basic episode and the expansion Hordes of the Underdark that lets you reach epic levels and has a deep story.
Shadows of Undrentide was funny but wasn't epic like the other two adventures IMO, it's a matter of taste I guess...and even if it lets you port your pg from other adventures I recommend to start with a new one because it's not balanced for strong pgs.
Have a good play yoga
