Todd Heap or Dustin Keller?

Ok last week I'm made a game time decision to sit Keller and start Jeremy Shocky mainly because Shockey has a veterin QB Drew Bress throwing to him when Keller has an in experienced Mark Sanchez under center, and it turned out to be the right decision as Shocky scored 2 touchdowns and racked me 15 points when Keller only had nine points I believe. but now Shocky is hurt and although he still has a chance of playing i don't know for sure if he will and I still don't trust Keller with Sanchez as his QB and there up against new england. but I realized today that Todd heap who had a great game last week is free. should I drop Keller and pick Heap up? What do you think?