I haven't really done a whole lot of graphics using the pen tool, so I'm still not too familiar with altering bezier curves that well yet. And, I've tried the polygonal lasso tool, but for some reason I haven't figured out how to use it efficiently yet either, so my choice so far is still brushing in quickmask mode. I don't see it being a disadvantage in terms of speed/efficiency and accuracy, since it's just as editable as anything else as far as I know, plus it doesn't take a lot of time to shift+click and then undo if you mess up. But, thanks for the tips nonetheless. I'll keep all the advice in mind.