As GF said, Alonso might not have been known here, but was definately known in Spain. Mascharano was an odd affair at West Ham, but considering we were seriously linked with him before that move, i dare say he was pretty well known too. Torres, well, his reputation was made at Athletico, anyone who argues he wasn't seen as one of the best strikers in Spain, indeed Europe i'd push, is a cretin.
Again, not saying they haven't improved having a manager who supported and encouraged them like Benitez, but its not like he spent £7.4m on a random kid through word of mouth type gamble.......