Well the kp600 doesn't vary that much in terms of price compared to the wp1300 and you get real correction from wp1300, so for me it all boils down to the following questions
Can you alot enough time to learn how to use rotary and have the patience of using a rotary?
If yes and then go for the wp1300, if not stick with kp600, then again kp600 is only ideal for spreading liquid products.
What are your goals in buying a polisher?
If its just to save time waxing then its kp600, if its to correct and paint and make it look great then its wp1300
How far are you willing to go after buying a polisher?
kp600 requires less add ons to work well, the wp1300 needs more items like backing plate, pads and polishes and compounds, pad spurs
so basically for those that just want to make their vehicle look nice without improving paint then kp600 is ok, but for those with defects and can't stand not to remove them like me hehehe then i would suggest wp1300, of course the Makita is way way much more expensive but for me my Makita was well worth every buck because i really bust my arms with the wp1300 since its a lot heavier, try polishing for 3 to 4 hours and you would notice the difference






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