Stanley TRE550 Electric Staple/Brad Nail Gun
Review by Ian Wright "DIY Extraordinaire" : Does the job for the DIY - 5 stars for the price

Pros:
-Safety. Great safety feature which is a small clip where the staple comes out. The stapler will only shoot the staple if the clip is depressed, and it will only be depressed when you have it in place to staple something.
-Dual Purpose. Stapler / brad nail gun. I only used the staple feature, but I'm sure the brad nail feature works fine as well.
-Electric. You don't need the getup involved in having an air gun. Plug it into any outlet and go.
-Performance. When I pressed firmly down on the wood I was stapling, the staples would sink all the way down most of the time. This was really a 4 out of 5, because if you didn't press quite firmly, it wouldn't sink the staple all the way. I was stapling into southern pine, which is a softer wood. I don't think it would have performed as well with a harder wood like oak. I'd have liked a stronger gun which would sink the staple all they way regardless of how hard I pressed, or what wood I was stapling into, but then for $25, I can't complain too much.
-Specs. Compare this electric stapler to other electric staplers. They are 120V, 10 Amp, 60 Hz, just like this one. As for why they are more expensive, who knows.

Cons:
-Performance. See above. For the price, it is surely as good as it gets, and will get the job done for the average DIY such as myself, but the power isn't overwhelming.

That is all the usefull information in my review, for a more exact and mostly boring background of my review of the stapler, read below.

I recently moved into a house with a fenced backyard. There was a 2-3" gap under the fence, and so I had to install chicken wire along the entire length of the fence so that our rat terrier (the wife's of course) couldn't get out. Using the Stanley staple gun, I did it. Now, as for performance of unit, it was very good, not great. I found that if I pressed down firmly on the wood I was stapling, that it would sink the staple all the way down. The reality was that the fence would "give" a little when i stapled into it, and so almost all the staples stick out just a little bit. Now, they'll work fine, but it just isn't the clean look everyone wants. It would have been nice to have a gun powerful enough to sink the staple no matter what, even if the wood under the gun vibrates or "gives" a little, but then I'm a guy that likes extra power in just about everything. It jammed once which was my fault for not setting it against the fence properly, and the jammed staple came out with no problem the next time I pressed the trigger. By the way, the rat (terrier) is effectively trapped.

Stanley TRE550 Electric Staple/Brad Nail Gun
Review by David Julian "CREATIVITY and INVENTION Workshops" : Great but only for softer woods than Oak

Purchased one of these to drive 3/8" Stainless Steel Arrow T-50 staples through thin indoor-outdoor carpet into oak stairs. The staples worked fin in my manual Arrow T-50 gun, but the Stanley gun, at it;s highest setting could only get the staples in all the way about half the time. One bang with a hammer drove them in the rest of the way , but that defeats the idea of the electric gun, in my opinion.

It did perform well on a block of Alder and also Doug Fir, but forget about Oak , Walnut or hardwoods.
I would recommend this product for woods softer than Oak.