I used 3m tape, it wasn't that much in price though...
I do know there were some areas that seemed to have a little anodizing left and not all the way off and the paint didn't want to stick in those areas. Its ok, I'm happy with the results for the most part. For my first time doing this, and cost vs results, compared to professionaly redone I'm happy with it.
I wanted to pull the tape the same night I painted it, but after 2hrs when I touched the black it still left a touch of finger printing. Then yesterday morning I had school, so I couldn't pull it until last night.
I have a pt from 5-730 tonight, but ill try and install the grill tonight before going to bed.