I bought Sherline lathe then mill and I upgraded or added CNC later. Sherline sells all the parts. Sherline machines are not very big but will machine steel if taking light cuts.
I bought Sherline machines to learn CNC. If not convenient to try something at work I can try the CNC at home. I can do letter engraving easily on it.
Sherline is very good at selling parts and accessories. I have not had any problems with their equipment and they have a good record of fixing anything not right. For example some motors they bought from another supplier they will accept returns to fix and send info on how to fix which ever the customer prefers.
I think this is 10X better than a cheaper machine with no support for warranty or spare parts. Sherline is made in USA and equipment is mailed easily as it is sent more than one box if needed. Sherline machines are more portable. That is you will not need a crane or a fork truck as they are small and lighter. you need to check if they are big enough for what you want to do.