Reina isn't convincing when trying to intercept crosses, but to be fair to him, he can't be used to being battered everytime he goes for the ball. It was the same when Dudek, Westerveld, etc arrived. The former went on to be the best keeper in the league that season. It's the second season and beyond that we have to worry about.
BTW - Pepe's shot stopping is awesome. Better than Dudeks in my opinion. (Lets be fair - shot stopping was what Dudek stood out for).