never use base cleaner, it ruins your bases!!!
op when you wax skis you want to get the most wax off as possible, depending on the type of skiing you are doing you may just want to keep it simple but, after you scrape you should brush your base, there are many different types of brushes, i would recommend a brass brush, or a half brass half nylon best of both worlds, when you brush the ski you will really get to see how much wax is still on your base!
then you will want to "buff" the base, a fibertex pad is good for this, i have also heard of people using a scrubbing pad for cleaning dishes. after that you want to polish the base, swix sells polishing clothes, but i don think it is any different from a clean cloth, you just need something to get the wax particles off of the base, a paint brush is a good example of an alternative.