For AA metal awards unfortunately with the introduction of the dynamic pricing engine, EF alerts are nowhere near as useful.
In the past, you had MileSaaver awards booking into T, U and Z as well as Aanytime Awards booking into Y, J and F. Now you can't really rely on booking codes to tell you when you'll have the best deal.
The T, U, Z buckets seldom show up and AA just prices whatever they feel like booking into Y, J or F.