I have one I bought for $5 so I'd have a SS machine to leave at another place I sew. The tension doesn't stay in sync, but is easily fixed. I just don't like to have to keep an eye on it. I am going to give it a better cleaning and if this continues, the machine will be sold. It does not FMQ. I tried and had to take it all out and redo it at home on the 301. The bobbin does hold more thread than the 301, but that's the only advantage.
It'd certainly be worth the price of a cup of coffee to have a nice SS machine.