I am confusing now. My mobile provider is Skinny currently. I want to switch to another provider. To search website. 2degrees and Spark have a promotion for Prepay. 2degressis $29 plan has a double data for 3 months(https://www.2degreesmobile.co.nz/mobile/prepay/). Spark $29 plan has a bouns data until 4 March 2019. (https://www.spark.co.nz/shop/mobile-plans/prepaid.html). How should I choose? Which one is best about mobile network speed and coverage? Thanks.