Weber (6'-4", 236lbs): One of the hardest players to play against in the NHL
Petry (6'-3", 204lbs): Doesn't play as tough as he can but is very solid all around and will not be pushed around. He can play tough when needed.
Beaulieu (6'-2", 205lbs): He has a bit of edge to his game at times. Gets in fights which shows toughness. Can he play tougher than he does? yes IMO, but he has been working real hard with fitting in the system and this could be his break out year. We will see.
Markov (6'-0", 194lbs): Plays smart. Toughness is not part of his game but has proven to be reliable over a few seasons now.
Emelin (6'-2", 216lbs): Lays some pretty impressive hits at times. Very solid defensibly when he wants to be but got no offensive which limits his value and puck moving skills.
Pateryn (6'-2", 223lbs) Plays a very mean game in his own end. Has improved very very very slightly over the past few seasons.
Barberio (6'-1", 185lbs): His game is not toughness and can be pushed around at times. However, he is good all around, can move the puck, and has some offensive skills.
Toughest in the NHL?... One of the top 5 toughest with the addition of Weber for sure! Replace Markov with a few years of NHL experience of Sergachyov and I do believe the Habs may be the toughest!