A bit of a dilemma. Currently looking at a South America to North America for summer 2018. I obviously head straight to my Alaska account, especially since AA is devaluing (via AS) before too long. It will cost me 50K miles in J and I can play around with the free stopover, etc. and change flights at will. Alternatively I can just spend 75K Avios and get myself into MIA, DFW or JFK, but obviously no further without paying even more Avios. And 35 quid every time I change something. AS seems obvious on valuation and travel hacking terms, yet I have 250K+ Avios and am not looking forward to "dynamic pricing", whereas my 130K+ Alaska miles have a better use as F on Cathay or JAL. Thoughts?