I like using FrogTape for masking. I get it at my local Sherwin-Williams paint store. A large roll that is about an inch wide was $5.99. it’s composition is very much like Tamiya tape, and it has performed great. By the foot, it’s far cheaper than Tamiya tape, also. One roll has lasted me nearly two years, and that’s been 60-65 models. And I mask a lot, and don’t skimp on how much tape I use.
Good stuff- I highly recommend it!