Hi,
I am new to this forum and I am traveling PHX- LAX- LIH and back next week via AA/US Airways.
I am a BAEC Silver member and unfortunately for me this year I have accumulated excess tier points (1060) already and my points reset right after this trip. The only reason I have quoted my BAEC number in this trip because I had miscalculated my tier reset point and thought this trip would add tier points to the next year and would help me maintain my silver next year as I don't plan to travel much. Anyways, my main question is, now that I really don't need the tier points for my BAEC, its about the miles/avios. I have never used the AAdvantage though I have registered for it.

Is it wise to use my AAdvantage number, ie, would I gain enough miles for any kind of upgrade in the future? Or is it wise to leave my BAEC number and get the 50% bonus on the miles and redeem the whole lot of avios later?

This whole trip is in economy class. BAEC would give me 80 tier points and a little more than 6000 avios.

Thank you for your answer.