For emulation, I have nearly every program under the sun. However, I lack devices to put them on so I carry them around very unconveniently - on a desktop PC. I've been aiming to see if smartphones couldn't handle it in some capacity because let's face it - old systems are even less than some new smartphones. So I've been leaning towards finding out some peoples' opinions - which do you use? If you do use a smartphone or similar portable device, please drop its name and a reason why you chose it so I can weigh options. Over time I've just found Laptops/Desktops handle the job quite well.