Best value phone for Tmobile service via $45 Straight Talk plan?

[op t must]

Arrgh... Choices-good & bad... Will pay one Million dollars for your opinion...

something like a 4G Kit Kat-equipped LG Optimus L70 or Win 8.1 Nokia Lumia 635 (under $100)

 

[op t must]

Not a single reply...

Is there something wrong with my question?
Am I using the wrong forum?
Should I go to a different site?

What's a good value in a service in the Philadelphia market? What would you choose for a smallish handset to work on that service?

:-\