The CB is showing weakness to me, I think UTG+1 can push with a wide range of hands. Most of them you beat. Ofcourse you can run into a set or two pair every once in a while, but would you play it this way? I think not, so I advocate a call here.

Was there a spade on the flop? If so then I like a call even more.

This is one of those "Do you want to risk your tournament on the first hand" kind of situations *blegh*.

Edit: And yes, I would RR this PF, but I like to do it like Harrington with a percentage of calls and RR most of the time.