Is the Turbo Booster Plus an underrated attachment? Many collectors I know didn't even know of the Plus...figured there was only the Turbo Booster. I bought it by accident in a TG16 package and didn't realize until much later that it have memory for saving games.
Well, it's a very useful solution to the RF and game save deficits of a stock TG-16...but even back in the day, it was pricy (I bought one, then sold it to a friend to find TG-CD).
So...great gear, but price was always an issue, IMHO.
Oh, it was friggin' huge, so most folks would add that to the list of problems. Ha!