Hi Guys, I'm new here and need a little advice...if you guys had a choice, which airline/FF program would you choose? Northwest or Delta?

A little info on myself: I'll be mostly flying out of Sacramento and San Francisco, and mostly on international flights. Some domestics within California as well. I'll mostly be flying coach, at least for now until I make more money.

My priorities: 1. Ticket prices 2. Service/reliability 3. Frequent flyer program/miles earning protential.

Northwest seems to have the better FF program, but Delta have more flights in the West with a hub in Salt Lake City, whereas NWA's hubs are in the East Coast/midwest. But I figure I can fly one airline (for flights that aren't available for the other) and earn miles on the other airline's FF program, since Northwest and Delta are partners.