The best bang for the buck buffer out there is the Porter Cable 7424 available from
www.coastaltool.com or the Porter Cable 7336 available at Lowes. They are the same machine, just different accesories like the hook and loop backing plate. If you do get a buffer, don't cheap out. The PC is about the only orbital that can generate enough speed to break down a polish. A polish is to remove swirl mark and other paint correction. The $20 buffers are basically just waxers and anyone can put wax on by hand. As for the S100, if you go to a Harley shop, you should find the SEPC or GEPC, don't remember which one it is but basically it is the pre-cleaner to the S100, which is a pure wax. The Zymol you bought is a cleaner wax, which cleans the surface and puts a coat of wax on it. If you want to do this by hand, without spending ~$150 on a buffer and pads when its all said and finished, this would be my plan. Use a terry towel- good quality like Fieldcrest, which is a bit more aggressive than foam pads and it it to apply a polish/glaze like Megs. Swirl mark remover or GEPC. Then, apply a coat of S100 or NXT tech wax or Megs. #26. These are all available locally. The durability of the S100 is about 3 weeks, whereas the tech wax might be 1 week longer.