Micheal
What sort of floors are you planning to clean. The equipment required is dependent on the kind of work you plan to do. Someone here will be able to help you better if we know if you are cleaning domestic or commercial and the types of floors you will be cleaning e.g. natural stone, ceramic, thermoplastic etc
Despite the fact that I have a truck mount, high powered portables and spinners I find myself working on most hard floors with a rotary and a triple vac wet suction machine. Don't buy anything till you have thought things through properly.
Nigel