I know that a lot of people love them, but I just gave my Go!Baby away because I didn't use it. Since it is so much smaller than the Go, the resulting shapes are smaller (e.g., one die has three sizes of stars on it. I only wanted to use the largest size since the smaller ones were tiny). It seemed awkward for cutting strips since it required too much prep time and had too much waste. The dies for the Baby cost just as much as for the Go.
If you know someone who has one and have an opportunity to borrow it, I'd do that first. You can buy a whole lot of precut shapes from catalogs for the price of a Baby. Just my humble opinion.