I shoot a 55# @28" PSE Coyote. A year ago I was shooting 2018's cut to 28.5" and they were shooting fine. Went to carbon GT 55/75 but didn't like the complexity of weight tubes, blowing out knocks, etc. Went back to aluminums, and just bought some 2216 and cut them to 30" and they are shooting great.
My question is more of a poll. Post what size aluminums you use, what poundage bow and draw length, and what length you have your arrows cut to. I like the aluminums b/c it seems that you can grab basically any size arrow, and with a little playing around with arrow length you can get them flying true.