One other option, often overlooked, for a quality used lathe that is light enough for the home shop yet has the capacity for larger parts would be a South Bend 10K, also called a “Light 10”. It is essentially a 9 inch lathe w/ its capacity extended to 10 inches. Probably 90% or more of the wide variety of 9 inch parts & accessories on the market will fit it. It has nowhere near the power of a Heavy 10, making smaller cuts necessary, but is much more easily moved.
Ron’s experience w/ the inexpensive large, 3 phase machine is actually pretty common. Prices on used machine tools tend to drop dramatically when you cross a certain threshold where things are so big that 3 phase is a absolute requirement and/or heavy machinery is needed to move them. Several cases of beer fed to a long list of dive buddies w/ strong backs & weak minds can only go so far……..
Ken