Hey There, I completely understand what you mean! So many products these days advertise with such 'hype' - only to disappoint us consumers.
I never understood how the trimmer could 'figure out' where the quik was anyway.
Best way is trim a little @ a time and then check the nail. Problem with that ----I was lucky to get 'one' snip in on each nail (when using the manual clippers). Most puppy dogs do not want you snipping more than once on each toe nail anyway.
Recently, I bought a magnetized stick on LED lamp which was suppose to illuminate shadowy spots on your grooming table. Didn't work worth a darn. Might as well taped a flashlight onto my grooming bar with duct tape! Probably would of done a better job and been cheaper too.
We live and learn! lol