Do I really need specialized microfiber towels (i.e. specific ones for drying, buffing, cleaning, etc.) or can I just pick up a bundled pack of microfiber towels and use them for all purposes? I realize that specific weaves will be better at certain tasks, but I'm on a terribly strict budget and is there any serious risk or downside to just using regular microfiber towels as opposed to specialized ones? Also - is it safe to buy like wal-mart bundles of microfiber towels or should I stick to known name-brands?