Looking at a new MBP (refirb) for work. Wondering if I need a video adaptor for every thing, or is there a cheaper way than the $29 for VGA, again for DVI, and yet again for HDMI? Will the little block adaptors that NewEgg sells for $6 work with the Apple pigtails? Other options? Forgive if this is a Newb question, as I am a true newb.