I've always been fine taking my math notes on squared-paper sheets. In my opinion, working with squares is way better than working with lines; also, working with plain paper would be the best way, but it is difficult to format notes properly without some guidelines. Instead, squared paper allows you to:
- Draw diagrams, figures, graphs et similia very easily.
- Set your own style: if you want to write fractions, you can choose to take two or three lines, and same goes for integrals and stuff.
I think that engineering paper wouldn't be the best choice for you; I can't say anything about dotted paper, because I've never tried it. I suggest using 0.4/0.5 cm wide squares (about 0.2 inches). What about the color of lines? Let's see an image made with the Notability app (which I strongly recommend, for note-taking with iPad):
Lines still cross with some symbols, but writing the formula with a thicker stroke results in a more pleasant view (it's actually written using my thumb in the screen, so the symbols proportion may be a little incorrect). Using a light color and thin lines can partially solve the problem of lines cutting symbols.
Math-formatting and aesthetics
I suggest you to look at the LaTeX math-formatting system. While not able being a human plotter, you can still learn how to write some beautiful math formulas. You are probably asking, "Why LaTeX?". LaTeX is still one of academics' best friend, thus being the main tool used for writing research paper, thesis and essays. And it is, because the math and the text are very well-formatted. So, why don't learning how to write math from LaTeX?
Plus: note-taking system
Maybe you are also trying to find a better note-taking system. I'm just giving a couple of suggestions:
- Transcribe your notes with LaTeX. They will be then available anytime, anywhere and you can easily share them with everybody.
- Start using the Cornell system to take your notes. It is well-designed, and helps you in finding topics and things.