1. Read the title and OP of this thread.
2. Are you sure it's three points anywhere, or do I have to purchase via Amex?
3. With the current Amex redemption options, UR points might arguably be worth more.
1. I understand, but the title didn't take into CO/UA as well, and Dan did mention it. So I assume that he is making a final list, not just for this thread.
2. 3 points is anywhere, anything that it categorized in travel gets automatically 3 points in the end of the statement, no difference if you buy it online/agent/phone. I charged at least 200 travel purchases on that the last 2 years, and I never had a problem. Purchasing by Amex would give you 4 points per dollar - confirmed.
3. It might be, but even if you'll give Amex a value of 1.5, which is no doubt nothing less than that (I still sold Amex today at 1.7 rate) you would equal = 4.5, that is more than the value Dan gave for UR - 1.9 x 2 = 3.8.