Having Painted before, I really know and understand the importance of perfect, quality, tape and process..
Any automotive paint shop will sell great tape that most Painters use..
The green 1/4" and 1/8" Painters tape sizes are my favorite for all those little thin areas (like between and beside the C pillars), and they flex and bend nicely around curves and corners, if you want to learn how to do this..
The Meguiars tan tape is really pretty good and is way cheaper than any of the blue tapes.. I use it all the time..
If you want to save on tape and cover more areas there is always the 3M hand tape machine that holds a roll of paper of various widths to get the edge taped and then past it..
I would worry about anyone that never tapes anything.. There are just too many things like rubber and plastic that can get damaged beyond repair if you accidentally touch it with a Rotary, etc...
Here's an idea - quit dusting everything - there is no need to run your compound to totally dry and dust..
If you want to really watch your work, you should be able to detect when its starting to dry and spritz something on it to keep going longer..
If you have learned by practice, how much product to put on your pad each time you use it, there will eventually be very little left to dust or even clean up...
The Pad will hold it for you, as it was always designed to do...
You will need more than a couple of pads if you really want to pursue this..
There is merit to running a piece of tape between door jambs to help keep stuff out of there if necessary - we did this in the paint shop but did it in a way to not leave a "line" where the paint landed and built up - even if it was just a little.. Its called Back Taping, and I have talked about this many times before..
Any Blue painters tape will always be way more expensive than the light tan painters tape, so you have to decide if you want that additional expense, vs the tan tape that works pretty darn good in thousands of body shops every day..
Good luck !
Dan F