I have both of those cards and after many evaluation decided to shelf Chase card and exclusively use AMEX Bonvoy. Without knowing your goals, it is hard to make a recommendation. Do you earn enough Bonvoy points by stays to satisfy your needs? Do you value the flexibility of AMEX points? Are you ready to sacrifice flexibility over earning potential of Chase Bonvoy? If you like the flexibility of points then have you considered Chase Sapphire or similar products?