I've never really liked the Lightspeed products mainly due to the fact that they were uncomfortable during long trips and would constantly have to adjust them per leg. I found the clamping down action more pronounced than the Bose. I went through 2 different models per Lightspeed and ended up...
I used the King and didn't pass my first test by 2 questions. I called King and they refunded my money. I then went with Sporty's videos in addition to studying with the Gleim instrument test prep. It was far superior to King in my opinion. I hit it hard with Sheppard Air a week before my test...
I'm looking for a CFII to instruct in my plane and help me finish my Instrument rating. 3 week ago I did a PIC (Professional Instrument Course) where they send out an instructor and you're supposedly to finish your rating in 7 days... what a nightmare that was. Needless to say I needed more time...