I would say that service in First Class on NW domestic is erratic. I've had excellent service, poor service and no service. I continue to favor UA over Northwest. I've hardly ever experienced poor or no Service in first class on United. All airlines seem to have the "disappearing flight attendant syndrome", but there appears to be a regular practice of the FA's "hiding" behind the curtain in the galley on Northwest. I haven't seen this on UA.

I do think that Northwest First Class seats are poor. They provide no lumbar support and many of them seem to be falling apart. I've noticed this on the DC9,757 and A320 especially.