If space is truly the big issue then 3 in 1 machines can do multiple functions in a smaller area on parts bigger than mini machines can hold. The down side to them is that the compromises made in getting all three functions in one machine make each of the functions less than ideal. The prices usually seen for them, in my opinion, are often too high for the actual capability you get. It is common with all kinds of machines that the more things they do, the less well they do each of them. Still, it is all there in one machine, and for hobbyists it is definitely a real option. If you can find room and money for individual machines, you may be happier in the long run, depending on what you plan to do with your machine(s). I think the Smithy machines are overpriced for what they are and what they do. Just my opinion, and I have never owned one, but have helped somebody learn the basics of using one.