If you can cash out 700$ for a unlock phone i say go for it
. I just can't afford this amount for something that becomes obsolete in just 6 months and knowing i'm gonna be tempted by all the new phones. I have to wait and see then use my HUP.
If your phone is still in good condition in that 6 months down the road you can always resell it to absorb the cost of your next unlock purchase.
Mobiles keep pushing the pace and i feel like it was i'm in the pc cpu race back in the late 90's.