Thanks, mooper. I agree with you reg. domestic resumptions and reg. easiness of earning Delta miles with cc, etc. However, I rarely redeem domestically, so DL miles value is much lower for me then for you. Most of my international resumptions are FROM EU, so YQ is making them much worth even when seats are available.
p.s. Also, domestically, even DL is often priced @ 40k, AA or UA are priced @ 50k for the same dates. I almost every time check all free when I redeem domestically 8-10 times a year.