Default [Q] MetroPCS users what data plan do you use

I'm planning on getting a Moto G and putting it on my current Metro account. Currently, with my Motion 4G, I'm on the $50 plan with 2.5 gig of 4G (LTE) speed, but unlimited data. Now, I know that the Moto G isn't LTE, it just gets HSPA+21. Do you know if Metro will consider the G as a 4G phone? What I'm trying to figure out here, is if I can go down to the $40 plan and not worry about Metro keeping track of my 4G usage since this phone doesn't get "4G".

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