Hi, i just popped into lillywhites after work today and I held the 16x19 version for the 1st time. They are selling the 16x19 at £40 and the 18x20 at £60-£90 (depending on grip size). Why do you think there is a price difference? The 16x19 version has aerogel 2hundred "plus" written on the side... I asked a sales assistant and he said that the 2hundred plus was for intermediates... I don't understand. Apart from the different string pattern, the 16x19 felt a bit lighter and the racket head seemed a tiny bit larger. The cardboard on the front suggested that it had more power etc... How do people think it plays? is it a racket for people who aren't amazing?