Best Buy Phone plans for an unlocked iPhone 5s?

I work at best buy, and I know you're thinking that I should know this but I really do not keep up to date with phones that much. I work in best buy warehouse and I was curious to see kind of plans I can get at a good cost with my employee discount. Right no I have a T-Mobile pay as you go plan that runs me about $30 a month. I would like to have unlimited text/call with some data at a good price. I'm not sure what carriers give as a discount especially to someone that doesn't work in Mobil. Once again, my phone is unlocked.
Ty for your help!

Discounts for employees are usually taken off the cost of the data plan. I know that Verizon has discounts for BB employees but they don't activate unlocked phones. AT&T does as well, I think.

You're honestly probably best off getting in touch with someone from the Mobile department because they would probably know better than anyone else.