Personally, I prefer to put statements such as i++ on a line by themselves. Including them as part of a larger statement can cause confusion for those who aren't sure what the line's supposed to be doing.
For example, instead of:
value = func(i++ * 3);
I would do this:
value = func(i * 3);
i++;
It also means people don't have to remember how i++ and ++i work, and removes the need to apply quite so many preference rules.