Have used both, DeWalt pretty good for tight area were getting a swing with hammer impossible; been disappointed with Klien, wont set staple into old framing or engineered joists. And the Klein being not much different in size than T50 can't really use hammer to get them set, they also have habit of curling when trying to go into that harder surfaces. The GB uses a little heavier staple but not enough to make a difference.
The Dewalt make short work of fastening runs of Romex. A lot less smashing of fingers. Around here staples are only available at HD for either one.
Been holding out for a Milwaukee too, I have the GB and Klein.
GB and Klein have a couple of different sizes. GB also has ability to do coax and cat. Not real sure on DeWalt.
From what I understand about the DeWalt it has a sensor or "feeler" you place it over the cable or cable(s) so it know how far to set the depth like 1 14/2, 2 14/2s stacked or a 14/3 etc. It doesn't set the staple tight to the cable you can slide the cable after the staple has been set.
