Similar to what others have said, you need to buy the biggest, heaviest machine lathe you can afford price wise and space wise. Voltage is also a consideration because as lathes get above 10" swingover, they are generally operated on 230 volts. Try to find an old Clausing or Atlas bench lathe that is in good working order with some attachments. I have a 10 X 40 Clausing floor lathe that is around 35 years old. It maintains extremely close tolerances for my GCBM R/C 25cc gas engine parts. I gave $1,500.00 for it with a bunch of attachments. Those little micro lathes will work, but you have to take extremely small cuts, which take a lot of time. The operative phrase in machine tools shopping is: "Buy cheap, buy twice (or maybe more!)".

My humble opinion,
GPB