I have started waxing my MINI.I am using the 3- step process recommended by Zymol:wash and rinse,HD cleanse and waxing and polishing with buffing towels.I am now planning to buy an orbital buffer.My question is- how and when should I use it for the best results,for example should I use it after applying the wax or can I do polishing even after everyday wash and rinse in between waxing sessions? Any tips on the best brand of polisher?