I've seen him play plenty...'very good' is about as big of a reach as I've read in this forum.
Plus, "when he's healthy" is like saying "congress works well when they agree with each other"...
Also, touching on the "spend the money" argument...we need to pay our defensive stars like Dareus, not absorb Bradford's high contract (which was simply a product of being before the rookie wage scale). Not to mention there are decent FAs on the market that can help plug holes and give the Bills depth. Free agency is really there to help good teams over the hump, not make bad teams relevant. The Bills are on the cusp, so they absolutely need to spend money wisely in free agency to solidify their roster.