Go with Eurobonus, One R/T OSL-MEL in C will put you a few thousand short of EBG. SAS is generall good with op ups, you can use points to upgrade from all booking classes, and the 15/25%. If you do a lot of US you can also consider CO who will join *A in a few months, they have direct EWR service. SAS also has the EB Mastercard that allows me to rack up a ton of miles