I agree that if you do some serious work, you can beat 2.5%. For example, one of the AMEX cards gives you 5% for grocery stores. I've heard of guys going and buying gift cards at grocery stores for all their other shopping to max that out. I'd just worry I'd lose one and then would lose more than the money I made. But as the previous poster alluded to, I only consider it savings if it actually saved me money. If I wouldn't have bought it or paid that much for it, it's not a savings for me. $220 for 3 breakfasts? $16K for a 9 hr flight? Better be some really personal 'service' inside the first class suite for that price. Not a chance I'd pay anywhere near that money, so I wouldn't have "saved" $16K. Finally, I have more than 200K ultimate reward points and I only spent $8K total on two cards to get them. I'm approaching 300K Marriott rewards points and after the initial $4K in spending on that card, I only use the Marriott card at Marriott properties (and since I'm Platinum, I'd get those breakfasts free also). The rest of my spending goes on my 2.5% card. To each their own, I just don't see those numbers as realistic savings.