Wes Welker had a lot of success, certainly more than Edelman, and arguably more than Moss in NE.
I think ASJ is fool's gold. Its been 5 years, he's likely already played his best ball, and it wasn't all that good. Sure if he's free to pick up on waivers, go for it, but he's not a guy to be targeted in my opinion. Chances are New England brings in at least 2-3 pass catchers in the draft, and its possible Philip Dorsett plays a bigger role this year, and we can't truly rule out Josh Gordon either.
If I owned him, I'd be trying to sell right now.