Which DE do I pick up??? Will Smith or Ray Edwards

I play in a 16 team dynasty league where we start one DE every week. I currently have A. Kampman and O. Umenyiora, but my leaguemates dropped from their rosters Will Smith and Ray Edwards. Should I pick one of them up??? Which has more vale going forward, for seasons to come???

I'm not big on Edwards as a dynasty pick as he's likely to leave Minnesota after this year and I have a feeling a lot of his production comes from playing opposite Jared Allen. Will Smith is solid but he perhaps played over his head last season. Kampman is solid but is also old. I'd probably stay with Kampman and Umenyiora for one more week and see how things play out. Then go after Will Smith if you want to go after someone.

BTW, Umenyiora is questionable this week to play.