Your choice of lathe will depend on what you intend to make on it.
(You can’t turn 11″ brake discs on a C1 size lathe, nor would you easily make watch parts on a Chester Crusader).
Size does matter.
Obviously, your budget, and the space available will influence your choice. If possible, take someone with you, who is experienced, when you go to inspect a possible purchase.
Shiny paint may look nice, but won’t fix wear!
Howard