I am going to buy a laptop for school, and need 6< hours of battery life, and I am also on a budget of 550$ max.Optimal screen size is 14", second choice 13.3" and third choice 15.6". Performance isn't an issue, as I am just going to be writing documents and browsing the web- I will be doing this all day though, hence the high battery life requirement. Should I buy a Haswell laptop now, or wait for Broadwell?