My present phones getting a annoying and freezing up etc, and Ive got a contract at the moment which im happy with (600mins, unlimited text and internet for £5/month so will buy the BB bundle for £5 a month ontop) so just buying the phone on PAYG and then just sticking my present SIM card in. But is the internet speed that much better and are there any other major differences and does it really warrant the extra £70?