thanks for all the replies. i'll definitely give a try to having CO upgrade based on my delta status. one thing that was concerning, though, is the apparent frustration with customer service. from an outside perspective, CO looks so promising since it's the only airline that isnt in dire straights when it comes to their financials.

are there any anticipated upgrades in service? DL is supposedly going to offer Song like services on cross country flights, while still keeping FC services. that definitely sounds promising.

we'll see how well that translates into actual services.

one thing i really did appreciate is that there was a mechanical problem on a flight i was on from LAS. they offered up a coupon for a future, domestic flight. i've never seen that on delta.