@krysak4ever, I know this isn’t the answer you’re looking for, but to help in selection you’re probably aware you can click and drag to select; but you can also double click and drag to select – this will select complete words as you drag making the selection simpler than by character.
@Krysak4ever If you are selecting text with your mouse, then you are probably going to be slower than using your keyboard no matter what method you use. I find it quicker to select text via my keyboard, avoiding moving my hand to the mouse if I can.
I have generally used camelCase so that a simple SHIFT + OPTION + → selects the class within a single button combination, but have recently started using dashes as I am using more of a OOCSS approach now, and that allows me to easier copy select parts of classes. It also looks nicer as that is what CSS does, but that is just aesthetics.
I do as much of my navigating throughout my code with my keyboard as possible. I highly recommend you learning to do the same, I think you will find it quicker too :)