With the FLEX you will have much more versatility especially with the Lake Country BP set.
There is a learning curve but it is well worth the effort IME. If you want the versatility, FLEX is the ticket!
A safer method to feather the scratches in textured trim IME is to use CarPro Reflect and an orange pad on a DA. Try Speed 4 first and increase as needed. Wipe off residue immediately. This is another application of the BEST polish on the market!
I don't doubt your opinion, but you paid a fortune for the versatility of the FLEX, purchasing 3 RUPES to do what one FLEX can do with the LC BP purchase for ~ $60.
I too will blaspheme! If you are only going to buy one machine, the FLEX has unrivalled versatility as stated so well above. There is a learning curve but IME it wasn't bad!
I use AMMO Hydrate as instructed. I wring out a wet towel and so spray a mist of Hydrate on the towel. I follow up with a dry towel. I use Microfiber Madness Dry Me Crazy.