I really try and stay away from here. Well to be exact i try and stay a 20 meter radius away as they always seem to have staff at the storefront harassing you about upgrading your phone.
When inside you will be asked within 20 seconds if you are OK, and they always want to try and upsell to you, so if you know exactly which pay as you go phone you want they will still try and sell you a contract.
Staff there don't appear to be particularly knowledgeable (apart from on the latest sales target) and i'd question how impartial any advice there is. read more