i think a rotary for you guys will be a waste of money , ok you can get cheap ones but you get what you pay for with polishers , plus pads are a tenner each , then the compounds ,
ask yourself a few questions , have you got the skill to hit your prde and joy without any experience .
far easier if your car has swirls / minor defects to get them professionally removed then all you have to do is maintain the result , ive seen countless guys spend a fortune on polishing gear only to use it once then sell it , plus a paint thickness guage is essential and again not cheap .
just my opinion guys i hate seeing people waste their hard earned