Product review (5 stars): Dryer duct clean-out
Dryer was taking longer and longer to dry clothes.  Wife of course just wanted a new dryer!  Searching these symptoms revealed we needed to clean out our clogged vent, and that was the correct move.  Rather than pay someone to come out and perform this service, this seemed like it was a much cheaper alternative (correct) and in the future you already have the tools to repeat the process (duh)!  Instructions and setup are simple and easy, worked like a charm, amazed at how much lint sucked up into the shopvac, took maybe 20-30 min total.

Also ordered the extension kit as we had a fairly long vent run through the house to the back, but mainly because I didn't want to use it from both inside and outside to hit the middle.  For the additional cost, and time saved moving everything back and forth, I think it was a good move.