I have a smithy, which looks just like that Shop Fox, that I bought about 12 years ago in the parking lot of a local hotel at a "truckload sale".
It works well for odds and ends in the garage, and doesn't take up much space. I've milled a few pieces with it from time to time - the table travel is pretty limited - but it's best for one-offs or modifications to things.
The Lathe part works better than the mill - mostly because the access and site lines are better, and the capacity is more in line with a standard lathe.
Amazingly, I can hold .0005 or 5/10,000's of an inch with it on the lathe if I'm really, really careful. Over the weekend I made a shaft for my wheel balancer that will hold motorcycle tires - I made a 13 inch long steel shaft, two aluminum taper spacers and a long clamping bolt. I turned three different sizes of threads and I drilled a 3/8 through hole the length of the shaft. I held the OD of the shaft that mates to the machine to less than 1/2 thousandth. I haven't used shaft yet, but the fit is perfect.
Here are the downsides:
1. Everything needs to be oiled, adjusted and honed when it comes from the factory. Plan on spending a day taking the whole thing apart and fine tuning every moving part. On mine the motor shaft actually contacted the guard and made a terrible racket until I corrected it. I seem to recall something that was assembled backward, and the tailstock was set up wrong from the factory.
2. The motor on mine was total junk. It vibrated, it had no power and it was noisy. When it quit, I took it apart, and, although it seemed like a good design, the internal wiring seemed way too light for the motor. .
3. Both the motor drive belt tensioning system and the idler belt tensioner is a kludge - I have never replaced them, but it's just a stupid design. The drive belt slips or must be adjusted often.
4. Many of the plastic handles have broken over the years - just plain cheap plastic. Even the bolts and screws they use to put the thing together seem cheap. I've replaced quite a few of them.
5. It's very slow to work with. Like any universal machine you are constantly setting it up and tearing it down, and there's nothing quick about setting it up. For example, to cut threads, you've got to figure out which gears you need, find them (the markings are terrible from the factory) pop off the e-clips, pull off the old gears, readjust the shafts, put on the correct gears, adjust all the shafts, and lock them tight, then check the thread cut. That can take 1/2 hour for a single thread cut. It's also not very powerful - so you are forced to take very light cuts, which is slow if you are cutting very much material off. And periodically I oil and then readjust all the gibs on the machine.
All that sounds pretty bad, but I'm not one to recommend the "industrial machine" in every situation. An industrial machine works great, but generally a homeowner is buying a well-used one to make it affodable. When they are tuned up and ready to go they are a joy to use, but they are more expensive, tooling can be very expensive, and if something goes wrong, it may or may not be a "fix it yourself" proposition. Those all-in-ones are relatively simple, the accessories and tooling are relatively cheap, and with care, they can make good parts, however you are usually trading your time for convenience.
I liken it to working with an old-fashion ratchet rather than an impact gun. They both will get the job done to the same quality level in the long run, but one is much quicker and easier to use.
If I were buying, I'd find a good used one with lots of tooling.
