The AI Optimal Dry does a fantastic job!  It's what I use 99% of the time because of it's efficiency.  It leaves my clothes feel soft and completely dry.  Never that slightly damp feeling.

The capacity is just fantastic.  It dries a king size comforter with ease. 

I haven't tried all of the different settings but so far, I LOVE this dryer.  I have it connected to the washer, stacked and they work seamlessly together.