Well, I bought this one from Wizard a few years back and never had a problem. http://www.wizardcoinsupply.com/product/max-flat-clinch-stapler-half-strip.html
I bought this one at a local Staples and it works great. I've stapled hundreds of 2x2s with it. http://www.staples.com/Staples-One-Touch-DX-3-Desktop-Flat-Stack-Stapler-Black/product_768308
I've had this model that I got from Office Max about 8 years ago and have never had one problem with it. http://www.discountofficeitems.com/...&ref=adwords&gclid=CPL02bWMj7YCFQrqnAodEFEAew Note: I purchased it locally rather than online, so no shipping charge. Scratch that! I just noticed that this has free shipping. Chris
I use one of these http://www.ebay.com/itm/Max-Flat-Cl...546?pt=LH_DefaultDomain_0&hash=item5aeefb32a2 I have stapled thousands and thousands of 2x2's and have not had it jam, not go through, fold the staple wierd, or any other issue even once. I like how it uses the small staples too. I love it!