Most valuable Emerald-grade OW programme Following on from Chris' article this morning and in light of possible changes to Aadvantage, I'm wondering what readers think is the mo

Most valuable Emerald-grade OW programme

Following on from Chris' article this morning and in light of possible changes to Aadvantage, I'm wondering what readers think is the most valuable Emerald-grade OW programme?

Why is it valuable to you?

I'm trying to compile a table to analyse the offerings out there. Your input would help to define the analysis. To keep the discussion focused, let's ignore the common Emerald perks across all programmes such as First class lounge access etc.

For example, I find Aadvantage valuable because of the 8 System-wide upgrades provided to me each year. In the case of BA, I find EC Gold valuable as I get access to the Elemis spa treatments even when flying in Economy. Or with MH's Enrich, my spouse (married only? Opposite sex only?) gets complimentary Platinum status.