Don if you're just waxing, there are a ton of six inch polishers very inexpensive,i think mine is a Turtle wax cheapie and it works great for wax.
If you expect to wet sand,cut and buff paint the above style is necessary.
no plans on cut and buff any time soon,i do have a 5 inch hand one but its hart for me seeing i am right handed. just hoping for something faster and bigger lol.
