Sonofjim,regarding the annoying(looking)marks left by "Scotch Tape"....
First off, "painters tape" does not have as good an adhesive,and can easily dislodge if you're not careful.Yet,it is very good in many scenarios(don't buy the el-cheapo stuff).
The problem with the vast majority of "Scotch Tape" products,is they are usually NOT "Scotch Tape",and dirt cheap imitators.
"Scotch Tape" is made by 3M company,whose products are superb,and the tapes stick/hold better than competitors.
However,the actual glue which on other brands can leave an ugly layer behind,does not have the propensity to do that.The adhesive IS superior,and designed to stay on the tape itself.
Good luck