i think evans shows up this week-buffalo has to throw to keep up, and the saints pass D is pretty bad. definitely start him.
as you said, gage has darnelle, im not messing with that, keep him on the bench. (of course, since this is fantasy football, he will torch the guy for 100 and a TD after he shut down moss and AJ) but he's an iffy play.
the SF D is tougher than we think, and im not actually even sure favre can throw the ball downfield anymore. his arm strength is nowhere near what it was, and they're just not taking any shots. berrian is a pretty risky play IMO.
i'd start holt. houston pass D isn't fantastic, and if the texans start piling on the points with schaub/AJ/slaton against that weak JAX D, i think you're going to see garrard take it to the air a little bit. i think holt can find some room. he's the safest bet of the guys you have left.