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.

The others do not have the computer glitches that Delta has.

The others are a lot more straightforward. If you book early, you might get a saver award. That's usually 25k roundtrip or multicity, or 12.5k one-way. If you book late, it's likely to be a 50k mi anytime award. Delta by contrast keeps moving the goalposts. You might see 25, 32.5k, 37.5k, 40k, 50k, 65k, 80k, 100k, 120k, etc. And frequently you won't be able to guess which it is in advance. Worse, Delta makes up their mind at the last minute, which makes it difficult to shop the competition. At that point the others will likely be sold out.