I�ve a model 3 and am very happy with it, my only advise is to not buy the 6 with 1.8l engine is not too powerful and it drinks more fuel than the power it releases.
A good busines it would be like i did a 1.6l diesel engine with 110hp, is a very light car and it kicks the other gasonile cars that are around 120hp and is cheap to drive because is diesel