Now that Favre is officially done, where does he rank all time?

[Stuck in TX]

Favre had no one around him hardly ever, and was one of the most fun QB's to watch regardless of if he was winning. As far as talent goes, I have never seen the tenacity, toughness, and raw talent in any other QB. I say #1 has to go to Montana, #2 Unitas, and #3 Favre, with Marino coming in at a very very very close 4. Elway is somewhere in the top 10, but IMO is overrated to certain degree. I hope Favre does not really retire. I know its "official" and all but I have a feeling he may be back before September...