In today’s market you can find unlimited types of machines that are promising great results. I’m not fan of machines and if I was going to train clients at my home, then I wouldn’t spent any money on machines. However, since you posted this question my answer is “it depends”. It depends on many factors such as space available, the type of clients you are targeting, your budget, your level of familiarity with any of the machines out there, etc. I would also check the type of warranty and the service support that comes with them, especially if these equipment are going to be for your house and not for commercial use (part of a big gym). Once you have figure out all these factors then choosing the right machines for your home should be easy.