I have: SPG Business Amex (most recurring purchases); Amex Platinum (certain travel purchases). I use my personal Chase Sapphire Reserve and SPG Amex for some reimbursed expenses as well. I have a Chase IHG MC and an Amazon Prime (5%!) Visa that I use for IHG and Amazon, respectively (and the IHG for the rare cases I need a MasterCard).
Aside from the 2-5% return by using these cards, (and warranty, travel, etc. benefits), I find amex billing statements the easiest to reconcile across multiple purchasers.
Aside from the 2-5% return by using these cards, (and warranty, travel, etc. benefits), I find amex billing statements the easiest to reconcile across multiple purchasers.