I bought this early last month and am finally getting to use it. The main reason for getting this brand is I have the 1/2" drill/flashlight combo to match. It has been very reliable, so got the impact too. This gives me 4 batteries and 2 chargers to boot.
As I am working on the Jake 1450, I got it out and am very impressed with it. It even took the big flywheel nut off the K321S! It has a variable speed trigger, so that makes it easy to remove/install bolts/nuts. I would recommend this brand of tools to any one. I have had the drill for nearly 4 years and haven't had to replace batteries as yet. I use that thing a lot!