Noah, people have done the math here on the forum, and going Tab Large is about the worse move you could do. You are WAY WAY better off financially to pay $200 more up front for your phone and go Tab Medium instead. In certain curcumstances, you could be repaying $500 over 2 years just for the privilege of saving $200 more up front. That's like $300 straight out of your pockets. Please do yourself a favor and use Tab Medium, which is currently the best value!
Its honestly one or the other, never both. Either you get a high subsidy on a phone because you want a super fancy smartphone and get a crappy plan, or pay for your phone upfront or on a Tab S and M and get a decent plan.
You just cant have the best of both worlds anymore. That's the harsh reality of the telecommunication industry now