As long as we don't have to kill a bunch of 5x3 penalties, JPar is the better choice, IMHO. Lammy is the more acrobatic goalie, and you need to be acrobatic to 'tend 3x5. OTOH, I believe JPar plays the angles better - which is why the puck hits him a lot.
And, as someone who remembers a tired Goehring going into the playoffs a couple years, leg weary shouldn't be a problem for our goaltenders. This too is good. After all, there's still 11 games to play.