Well, I currently have 2 RUPES machines with broken triggers making them utterly useless (this doesn't include the machine that I sent back 3 years ago for trigger repair that is currently broke) for what the cost of repair was I could just go buy basically the same machine at harbor freight for $100 and just chunk it when it breaks.
Meanwhile all 3 of my Flex polishers are working just as good as the day that I bought them 10 years ago.
The trigger mechanism on the Flex is far superior to RUPES. Flex triggers feel very tight and strurdy whereas RUPES triggers feel very fragile right out of the box.
I think its foolish for you to question what other professionals (unlike weekend warriors such as yourself) are posting up just because its on a platform (100,000,000 times bigger than this forum) that you choose not to participate in.
Put this in your pipe and smoke it instead of Crack rocks and maybe you will learn something rookie.
Cheers