Me low spend EXP MIA based was getting down to near 50% so other than RJs (where as an EXP you're almost 100% to get upgraded), row 11 on the 321ceo or very short flights I'm now buying F. Despite being a low spend EXP I was often number one on the list but the cabin was already sold out at T-100 leaving me to hope for a no show/misconnect.