[gringoDan]

Which of these metrics would be most important in evaluating a goalie?

I know nothing about hockey, but my intuition would be that you can throw W/L out the window - if you have an amazing offensive team you could let in 5 goals a game and still win. GAA is a reflection of both the team's defensive ability and the goalie's performance. It seems like SV% is the "purest" metric to compare apples to apples here. Unless I'm only looking at first-order effects here and the team's entire strategy changes based on who is in goal...

[dbt00]

SV% does have team and score effects, but it's the best single metric. It's often best to compare 1 - SV%, as that tells you roughly how many goals they're letting in.

So on 1000 shots, crawford allowed 71 goals, forsberg 92, Glass 102, Berube 109.

Goalie W-L is typically bullshit, but comparing goalies on the same team it can be useful. With crawford they were winning 64% of their games, without him around 35%.

[kd5bjo]

All of the stats are heavily affected by what the rest of the team is doing. If the team knows it's playing in front of a weak goalie, they'll play more defensively so that more shots are blocked in the field and only lower-percentage shots ever make it to the goal in the first place, raising the SV%.