Backspacing... Which would fit better?

In my serach for new rims:
15X8 4.25" backspacing
15X8 3.25" backspacing

31X10.5X15 tires will be going on.

Which rim would fit a 94 X better.

Would I have any rubbing issue with a non lifted truck. I do plan on lifting at some point next year though. If the rims sit for 6 months that's ok. I can't pass these 2 deals up right now.

Thanks

 

[Redrig]

Ill give this a bump and give my opinion, 4.25"

 

[Alec]

3.75" is best.

With those choices though, 4.25 is a better choice with less lift, 3.25 the better choice with more lift.