I also like Calico over Bennett.
Don't get me wrong, I think Bennett is a talented player. He showed it last year during the playoff game against New England. But he has no where near the athletic ability as Calico. And I think that is what Tennessee will be looking for in the #2 option.
Just like McCarreins last season, Calico just seems to have a knack for the end zone and he has the ability to grab the deep ball. This season I think his touches will increase tremendously, enough for him to be a producer.
Bennett will get his too, but I don't think he will be able to equal Calico in yardage and tds without significantly more touches than Calico.