3M Scotch brand automotive Fine Line tape. Comes in various widths. It isn't cheap but doesn't bleed paint.
And it's less expensive than the Tamiya brand tape, too. Buy it at your local automotive body and paint supply house or online (
https://www.amazon.com/Scotch-High-Performance-Polypropylene-Adhesion-Resistant/dp/B0082LJHAI/ref=sr_1_8?adgrpid=1334807680932084&dib=eyJ2IjoiMSJ9.3QvejlKLcWwJ3DkTkLc79_SzN0GjeTGMqR0Dmg7_JnN7uq-mOG-PyjgB8upY9cDW6pPHti_kA-zaRY8zSm-CKpFau8zUmD6AY9GL9GLqpry_K2odobHiEbLE3AzY9tvqdQTE6wa1K5h9CKx9ZCBTUQMZNcijtKM7KVxRYGX130OiMpYh9S6FX-9ixt2Ozgd-vfKpRs5xsqJjoyumyjcaF-JB9BKYi-k1HeyW-zHSfL_8DKe3qWyoxnfwXqJYIgtwH1KdZz5FJPUnQlVMox3W1B6hUoc_JLHiR7q7ot6t_o2imFIbZ16GG_vhDZ0Nc2F3U2vhrqCm1Y-Ii393c1t75PotaICdINZEJ5wsmF02tdCUx5Uj_On9gGV-trXGo1kkCR3Zd_5UW1AcIHohCFoiShQn_S9L30Mu7Wik-atSdt0bhAt9DXPgiil4NlC30j0d.EYXjCUB3jRgdwoObtcM15_AjrL_QXAnYOmC9HBORDPE&dib_tag=se&hvadid=83425867013221&hvbmt=be&hvdev=c&hvlocphy=88716&hvnetw=o&hvqmt=e&hvtargid=kwd-83425827075241:loc-190&hydadcr=24658_13769732&keywords=3m+fine+line+tape&msclkid=e1b2072933d9140f757a604858453b43&qid=1734438209&sr=8-8.)
There's also a recent addition to the 3M Fine Line product line called 3M Finish Line Knifeless Tape. At least from 3M's videos, this stuff is even better than Fine Line for modeling purposes. They are selling 32 foot long "sample size" rolls, which are more than enough for a model.
https://www.amazon.com/3M-Finish-Knifeless-KTS-FL2-Trial/dp/B071LGBQW8/ref=sr_1_3_sspa?adgrpid=1334807680932084&dib=eyJ2IjoiMSJ9.3QvejlKLcWwJ3DkTkLc79_SzN0GjeTGMqR0Dmg7_JnN7uq-mOG-PyjgB8upY9cDW6pPHti_kA-zaRY8zSm-CKpFau8zUmD6AY9GL9GLqpry_K2odobHiEbLE3AzY9tvqdQTE6wa1K5h9CKx9ZCBTUXjsBRmfv0HQF-wWMdVcKqD6EBiogHcqTtrCkbRgCC5hpR-vKGCD28lQri9IIVK-jwNpK6kit0xOu7-9RHCOoO78DKe3qWyoxnfwXqJYIgtwH1KdZz5FJPUnQlVMox3W1Kwp4YdAM_X0fjl5qhgSBco.Jc6ngoEO2YtyyoDBpRe4RHT2lNvI8u1Hp0LZ9HahLIg&dib_tag=se&hvadid=83425867013221&hvbmt=be&hvdev=c&hvlocphy=88716&hvnetw=o&hvqmt=e&hvtargid=kwd-83425827075241:loc-190&hydadcr=24658_13769732&keywords=3m+fine+line+tape&msclkid=e1b2072933d9140f757a604858453b43&qid=1734438366&sr=8-3-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1
Because of the cost of fine line tape, I only use it to mask paint lines I want to be razor sharp with no bleed-under. I use the quarter inch fine line because it bends around curves without kinking. I then use 3M blue regular masking tape to mask off the rest of the areas as necessary. I only buy Scotch brand masking tape. I'm sure there are other brands that serve as well, but over the years I've concluded that 3M Scotch brand is more than worth the higher price.
I also use the lime green 3M "lacquer proof" masking tape when I have occasion to mask for use with "hot" solvents, such as acetone and epoxies and other resins. This stuff is tricky, though, because it sticks quite aggressively.
As mentioned, both sheet and liquid frisket is useful for some applications. It's readily available at any art supply store like MIchael's or online.
In the "do as I say, not as I do" department, always keep opened rolls of masking tape in ziploc plastic bags and never, ever lay them down on their sides, especially on a dusty workbench! The side of the tape exposes the adhesive edge of the tape and it will immediately pick up dust and dirt which pretty much ruins the tape's ability to mask a razor-sharp edge. Every bit of grit and dust on the edge will create a tin "tent" on the edge that will permit "run-under." Keep tape clean and bagged and it will last a very long time. Leave it exposed to the air and over time the adhesive will harden, and the tape will become unusable. That's not the end of the world with cheap tape, but when you spend twenty or thirty bucks for a big roll of Fine Line, you want it to last long enough to be able to use it up.
Also, as most know, all masking tape adhesives will harden over time, especially if left in the sun, and if left too long, will become impossible to remove without destroying the underlying finish. Sometimes it must be removed with a scraper and acetone, which then requires a complete do-over of the entire job. It's hard to say for sure how long you can safely leave it on, but in outdoor applications, I don't leave the blue stuff on for longer than two or three days in the sun. Indoors and out of the sun, I wouldn't trust it beyond a week or ten days, although I have gotten away with a bit longer on occasion.
Nothing makes or breaks a ship model like the finish coatings. As a practical matter, it appears that modelers who are able to lay down a perfect finish with a brush are in the minority. It's so much easier to do with an airbrush in any event. I'd encourage investing in an airbrush rig to be sure of really good paint jobs. The cost of an airbrush and small compressor will be quickly recovered by savings realized buying "rattle cans" which are a very expensive way to buy paint and always pose the risk of "spitting" nozzles than can ruin a job.