Product review (5 stars): Super easy, works great!
This was very easy to install.  Our house is only 4 years old, yet the dryer vent install was horrible.  I installed this and it is much better.  Yes, it is pricey, but I felt it was well worth it!  The flow from the dryer appears too be much better than the cheap crumpled metal tubing this replaced.  I would have no problem recommending this to a friend.