As maddafinga said, what works best for you is a matter of personal taste.
Besides Bare Metal Foil and Tamiya Tape, some people (not me) get excellent results with Parafilm.
Personally, I prefer precut masks if one is available for the canopy I'm masking. I find them easier and quicker than the other methods, although the obvious drawback is the cost involved.
Hope this helps,
Mark