Warning: All potential converts to Catholicism

I'm reading this conversion story. As I'm doing so, it calls to mind a warning I'd like to give all thinking about coming into the Catholic Church. You've come to the point where you want to call the local parish and ask the priest some question. After you explain your situation, the first question you should ask, however, is, "Do you sometimes recommend that people should just strive to be the best Anglican they can be, the best Methodist, the best Muslim/Zoroastrian/Taoist, etc.? Or are you convinced the Catholic Church is the one, true Church founded by Jesus Christ on the apostles, and that all her teachings have been handed down from by the Christ through the apostles and their successors, especially the successors of Peter?" If he answers the former, thank him for his time and call another parish. Keep going until you find someone who affirms the latter. If he affirms the latter from the get go, proceed accordingly and good luck. Our prayers are with you!