Went through here last Wednesday night and was pleasantly surprised. It's not going to beat an AmEx Centurion, but the food is a notch above most US domestic lounges, and the complimentary alcoholic beverage selection is reasonable by those standards, if a still a little bottom shelf. Some pretty good cake bites/truffles they had out, too. There were maybe a dozen other people there besides my girlfriend and I, so not too crowded.
I haven't been through the MSP SkyClubs yet - only recently moved to Minneapolis, and I've been AA PLT until this year - but I have a couple flights on DL in a couple weeks and plan on comparing. More flights on AA in August though, and I'll be looking forward to dropping in at Escape then.