Aeroplan E and SE and other star golds I presume also get access to Elite Access seating in econo. It also popped up cheap upgrades ($120-$150 US per 3.5 to 4 hr flight in North and Central America) from low econo fares for my trip this past week. I was most pleased and took advantage (don't get First Class miles, only the comfort). I am not sure if those upgrades are available to everyone or only to "Elite Access" customers, ie star golds etc.