i stand corrected.... my purple tape is "Duck" brand.... says 30-day release tape on it. the green I have though is 3M, and just says automotive masking tape.

 

the Natty's was easier to get off than the EXP. The container says to leave on for 30-60minutes. Nice then it is really hard to get off. The Natty's goes on and off by hand and I think finishes it off really nice. I did try the eraser and it seems to work the best out of all the things I have tried.
Thanks again guys.