I recently switched from the original to the SP. I had no problem with the form factor of the original (my portable systems always stay at home anyway, unless I am going on a trip), and I had bought a rechargeable battery pack shortly after buying the gameboy, so that was no problem. I am currently playing Castlevania: Circle of the Moon, and I love it, but it would be almost unplayable without the light (it isn't a backlight, though, btw).