McNabb-Pietrangelo
Martinez-Theodore
I'd take Martinez-Theodore over Girard-Toews
Josi - Ellis
Ekholm - Fabbro
I'd definitely take Ekholm - Fabbro over Girard - Toews.
Third pairing is... Cole and who? Graves or who?
Pietrangelo and Theodore are Vegas' only two really good D. The rest are mediocre at best. McNabb had 9 points in 71 games last season. Martinez had 9 points in 41 games in LA. Not the best measure of a D, but the Avs top 4 combined for 126 points last year, with only Erik Johnson scoring fewer than 20 points. And the Avs allowed the 6th fewest goals in the NHL, so they couldn't be too bad defensively either.
For Nashville, it's close, but Fabbro is the weak link on the 2nd pairing. He's not bad, but he's definitely not on the same level as the other 3, nor would he likely be on the Avs 2nd pairing. I don't believe that Ekholm > Girard more than EJ/Toews > Fabbro, which makes the Avs the easy choice.
Our third pairing this season will likely be some combination of Graves, EJ, Cole and maybe Byram if he's ready, depending on how the other pairings shake out and who makes the team. Timmins is also a potential option.