The more I think about this, the more I keep coming back to the same conclusion:
my alaska miles increased in value today.
I'll defer to you on experience as mine is limited, though 90,000 in C to europe with
alaska miles beats 100,000 with skymiles by a little, when such an award can be found.
Maybe this has been mentioned in the past, or maybe i'm a lower class peasant who can enjoy C, but one nice aspect of
alaska miles is that u can actually get delta C class at a reasonable redemption level, better than u can get using skymiles, at least from my experience