The Curtis Painter experiment exploded in a shower of Erlenmeyer flask shards, awful interceptions and wretched decision making.
Kerry Collins wasn't much better in the first few games of the season before he was injured. The jury is still out on Dan Orlovsky, but it's too late to show much at this point anyway.
Either Peyton Manning or Andrew Luck would be far superior to that trio of stinkitude.
While it's still an open question as to whether Manning will be released or traded, due to their deplorable record, the Colts have the inside track on the first pick in the 2012 draft. That means that they would have the opportunity to draft Andrew Luck. Stanford quarterback Luck is widely considered to be the best quarterback prospect to come into the NFL since Manning himself.
Although there will no doubt be some growing pains for Luck, he will bring much more to the table as the offensive touchstone than Painter, Orlovsky or Collins did this year.