Eller has more value to us than to any other team. He has performed in the playoffs. Plekanec performs during the season but I believe he does not compete in the playoffs.
For the right deal, I would certainly trade Plekanec. His attitude over the years, with Subban, hell even Sekac if true, his comments about playing like a little girl, his habit to always play "tough" like rubbing the glove in the face of opponents, his lack of chemistry with any winger *just remember last year with Vanek. I think that Eller or someone else can take over his defensive duties.