Well again, I'm no expert.
I don't like Benjamin -- I probably should, but he reminds me too much of Johnny Baldwin. He doesn't come with Baldwin's baggage, but he does come with Baldwin's inability to separate. His speed is all distance speed -- he's not a fast or quick slant guy, and just about any competent NFL corner will be in his hip pocket all game.
The question then becomes, how well does he use his body? If he can't get free, can he use his great frame to
make himself open, like Gonzalez used to, or like Mike Evans does now. And, well, mileage may vary between guys like me and others on this board, but this guy did not have to make a lot of physical, shield-off receptions for the Seminoles because college football is college football. Which means that's technique that he's going to have to pick up in the NFL.
In my very humble opinion, that means he's going to give you iffy numbers his rookie year, and his production afterwards will depend on how well you think you can coach this guy up.
I don't like the guy, but I hold grudges.

I was burnt by Baldwin, and I don't want to get burnt by Benjamin just because I once again fall in love with a guy's measurables.
I'm a big Cooks/Beckham guy.