The 5GB T-Mobile plan is a much different beast. For one, it has only 100 minutes of voice, this has unlimited. Secondly, that 5GB plan has no off T-Mobile network coverage. Maybe if you never leave a major city that will work for you, but otherwise, this will provide much more coverage. Imagine if Google gets additional small carriers in-tow--they might be able to get close to Big-2 coverage in many places for less cost.