Look. Slavin is a great shut down D-Man, is frustrating to play against, and looks like the next Vlasic, maybe hell be better but that remains to be seen.
Morgan Rielly is no slouch defensively, has size, and isnt afraid of using his body. AND puts up points (18 in 14 games) and is coming off a 52 point season. He really does look like the next Duncan Keith, again, maybe hell be better.
Slavin has also had MUCH better D-Partners (Pesce & Hamilton & even Faulk) so far in his career, while Rielly's best was Zaitsev.
Two great young D-Men. Im going Rielly here.