Turbo-CDs are an overpriced collectors item. TG-16's aren't worth much at all, so you can't really save anything by adding to one (and no, you can't hook it to a PCE CD-ROM setup). A PC Engine Duo system is cheaper than a Turbo-CD and will play everything a Turbo-CD ever could plus much more, including the large library of PCE HuCARDs. You can hang onto your TG-16 to play the few North American exclusive TurboChips, if you don't want to spend money on having your consoles modified.