Playing beside AD99, I would expect those older and written off edge rushers to be rejuvenated.
Miller himself was seen as past his prime by many until he came to the Rams. Now he is seen as a clutch, elite performer again.
I would prefer a big name like Hunter if the price is right and the money is workable and sustainable, but would not be too upset if the Rams go the Houston or Ingram route. I would at least approach it with an open mind. If the Rams think either player is a scheme fit, then I would expect them to excel here, just like all the others did before them.
EDIT - People also act like our pass rush is chopped liver. Floyd, Gaines, and AD is already a formidable unit. We got by just fine with it for most of last season. Miller took it to a new, completely game dominating level. We all want that back, naturally, but perhaps the Rams decide to opt for a later season pickup again, especially given how the NFC has declined and what the Rams have now might well suffice as-is for top seeding. Give in-house guys like Hollins a chance to prove they cannot replace Miller before we go spending cap dollars and assets to address the pass rush. Who knows. I don't think that approach would be unreasonable.