Not perhaps to everyone’s taste, but I find the best value for my Avios when I am in North America and need to have short trips domestically on AA. Of course, not everyone in here have a need to fly US domestic flights under 650 miles, but on AA these offer stellar value.
In August I was in New York, and I wanted to take someone to North Carolina with me. I wanted a direct flight as we only had about 2 1/2 days available to us. So I would flights between La Guardia (LGA) and Richmond, VA (RIC). AA wanted $950 per person return in cash, and the return for two with Avios was 2 x 2 x 4,500 Avios + $10.. Unbelievable value..