I used to use the Tombow but found that my cards were falling apart after a little bit. Now I use an ATG. You can pick up the gun at Michael's with a coupon and I buy my tape here
. I buy a dozen at a time at $1.52 each. I use the Scor-Tape/Sookwang only when I'm making something like a favor or an envelope. It's basically the same thing as the red tape, only better because you can tear it.