I happen to think the BA Visa from Chase is a great value card, though I suppose this depends partially on your location and your travel habits.

For a quick, real world example on something I might be looking to book right now, I looked up a flight on 19 January, LAX-JFK one way on American (economy).

To book onto AA 34 with cash would cost $149.70 as of right now.

The same flight with Avios is 12,500 points and a $2.50 security charge.

Which leaves you with $147.20 worth of value for 12,500 Avios. That works out to roughly 84.9 Avios per dollar. These values are even better when flights booked with cash are more expensive during the high season.

At 1.25 Avios per dollar earned on purchases, that's $67.92 spent on the card to earn $1 in rewards, not counting the sign-up bonus (up to 100k Avios, or $1,177 in rewards according to my formula above) or money spent on BA flights (2.5 Avios per dollar).

Also, there is a $95 annual fee. But if it interests you, there are no foreign transaction fees and the card now includes an EMV smart chip for greater ease of use whilst traveling abroad. You also get a 2-4-1 "Companion voucher" when you've reached $30,000 spend in a calendar year which is valid for two years and allows you to book any flight on BA metal and only spend the Avios equivalent for one person (you need to pay the taxes & fees for two, though).