That's exactly what I'm trying to do BUT I'd like to if there are any factors (besides seat availability) that would make me choose to use my miles to fly on Continental vs Delta.

For instance, maybe Delta FC service to Hawaii generally has better food, or equipment or whatever. Alternatively, maybe Continental to Amsterdam is a must to avoid?

Here is a specific example where I need to choose between 2 similar Delta and Contental flights.

thanks again for your help (and patience)

LGA-TUS (2 options)

CONTINENTAL

Your flight on Wed., Feb. 14, 2007 22,500 Miles
Depart: 5:00 p.m. New York, NY (LGA - LaGuardia)
Arrive:8:03 p.m. Houston, TX (IAH - Intercontinental) Flight Time:4 hr 3 Flight: CO1433
Aircraft: Boeing 737-800
Meal: Snack or Brunch
No Special Meal Offered.

Change Planes. Connect time in Houston, TX (IAH - Intercontinental) is 42 minutes.
Depart: 8:45 p.m. Houston, TX (IAH - Intercontinental) Arrive10:33 p.m.
Tucson, AZ (TUS)
Flight Time: 2 hr 48 mn

Travel Time: 7 hr 33 mn Flight: CO1538Aircraft: Boeing 737-500
Meal: None

DELTA - SkySaver

Delta 1052 757 First LGA 5:00pm 14 Feb 2007 ATL 7:33pm
Delta 627 738 First ATL 8:08pm 14 Feb 2007 TUS 9:48pm