Polishers - Forced Rotation vs Free Wheeling


Mike here is a question I have never seen addressed when would it be advantageous to use a free wheeling polisher vs a forced rotation polisher?

I understand the benefits of a forced rotation machine but if a detailer had both a free wheeling polisher like the Flex XFE 15 (cordless free wheeling polisher) and the Flex XCE 18 (CBEAST) what would be a situation where the XFE 15 would be a better choice than the XCE 18?

Thank you