In a keeper league, I would trade Tanguay 1 vs 1 for Benn. However, can't you package Tanguay along with say Williams for an upgrade at wing, and just pick up Benn with your free spot?
Keeper league 14 teams (H2H, 20 active players keep 16 NHLers, 16 minors)
Scoring Cats: G-A-PTS-PPG-PPA-(+/-)-HITS-BLK-SHP-SOG-FOW-GWG / W-L-SVS-SV%-GAA-SO
C- Crosby, Barzal, Bennett, Schmaltz, Novak
W- Forsberg, Batherson, Nichuskin, Tuch, Konecny, Maccelli, Sharangovich, Bertuzzi, Kaliyev, Neighbours, Reichel
D- Carlson, Rielly, Klingberg
G- Hellebuyck, Demko, Merzlikins, Vejmelka
Minors:
F: Fantilli, Cooley, Bourgault, Perreault, Cowan, Ohgren, N. Foote, Goyette, Iskhakov, Denisenko, Tracey
D: Simashev, Willander, Lambos
G: Schmidt, Rodrigue, DiPietro, Gaudreau, McKay