I have Sieg X2 mini mill & C3 14"x7" mini lathe.
For the money they are excellent.
Bought both from ebay - seller ozmestore1.
I did strip both machines & did some "tuning" - gib adjustment, lapping, etc. Improved accuracy quite a bit.
One excellent site to visit is
mini-lathe.com
For the money, in my opinion, there's nothing better on the market.
Sure, the bigger machines will do a better job, but they do cost much more, take more room & weight MUCH more.
I posted some pic of one of my projects few weeks ago
here.
That was my first ever job on the mini lathe.