My cat's claim was denied because his file said he'd vomited a couple times in the past. What animal doesn't vomit at some point in 9 years? That's hardly the same thing as vomiting repeatedly for days in a row, requiring x rays, multiple blood tests, and medications. Unless you insure your healthy pet at birth, it might not be worth it. Your dog was hit by a car and broke his leg? Well, it says here that 5 years ago he tore a dew claw so that leg's not covered. Your dog has pleurisy? Well, she was panting during an exam 10 years ago so that's not covered. She obviously had lung issues then. Cat's developed diabetes? Well, he was apparently a bit overweight at one point so we aren't going to cover that. Any animal that hasn't had a major illness can still be construed as having pre-existing symptoms for just about everything at some point.
I'm saying yes for recommending this company to other pet owners, but it's very conditional. Get the insurance at your puppy/kitten's first exam. Maybe then they'd actually be covered.