Something like a Raglan can be moved by 2 people (just) and parts are available just like Boxford and Myford. The Myford will still need 2 people to move though as they are heavy, the slightly larger machines say 5x24 do not have a much bigger space envelope and can do that bit more. Saying that if I could get a Myford (ML7 only) for £500 in good nick, I would probably go for it because even if you want to move on to a bigger machine in the future you will never lose money on it if you look after it.