The Harbor Freight DA polisher is really a great bang for your buck - it's what I used the last time I did a full correction on my 2010 Fusion. It worked great, and my results were awesome. Here's a trunk pic of how it looked when I was done:
Incidentally - M105 and M205 were largely responsible for these results.
A few caveats:
- The backing plate that comes with it is lacking. It will work, and in fact I was able to complete the paint correction on my Fusion using the stock backing plate, but it absolutely CHEWED through pads.. Replace the backing plate with a better one, and your pads will last MUCH longer.
- The grease that comes pre-packed in it out of the box is not very good. As a result, it's NOISY and transmits a lot of vibration. When you replace the backing plate, it's very worth it to open it up, clean out the grease, and re-pack it with good grease.
- Some people change the orientation of the head and report that it's easier to use, etc.. I did not do this, but apparently it's pretty common.
- Some people replace the power cord with a longer/better one.
Mods can be found
HERE
I will say that there ARE definitely better DA polishers out there, but I'm pretty happy with the HF one that I have, now that I've done the first two mods, above.