I bought the small harbor freight for my first restore and it fell apart after the second run-through. Obviously can't recommend but also, I ended up not using it much. I found scotchbrite was way faster for larger metal parts and I simply replaced any old fasteners that looked bad.

Doesn't seem necessary to me but I know others like them.

Here is what my center shaft looked like after minimal use, it completely removed the threads and you could slide the wingnut off. Vibrations like this are really tough on materials and HF is bottom of the barrel in terms of quality. Also, it really didn't clean the parts that well and left inconsistencies that required cleanup any way. I really don't see the appeal of these for pinball, it take minutes to clean up metal with a scotchbrite pad.

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If it matters I like the very fine scotchbrite (mine is brown and I get them at Home Depot in the sandpaper section).

Life is too short for cheap tools...

My dad was pretty cheap and didn't like to spend money on tools. I have this vivid memory of picking up a pair of side cutters he had that were super cheap and probably 30 years old and I realized that nobody throws away tools and if I bought a cheap hammer I would have that same hammer 30 years from now. I personally decided that I would buy decent tools (maybe not the best) and when I was old I wouldn't hate my tools. Other people can do what they want but cheap tools make me sad.