Where to buy new S7? Best for updates, etc.

[srfoot]

Hi;
I had an S5 from verizon. Switched to T-mobile with it but lacking functions.
Staying with t-mobile for now. Where would be best place to buy the S7 and hope for updates, etc?
Also, any word on quality of fingerprint function?
Thank you.

 

[Almeuit]

The fastest updates would be from an international model versus a carrier one.

 

[srfoot]

Thank you.
What features would be different buy buying an international one? Any downside to this?
Buy from where?
Would all functions not necessarily be available and functioning if not purchased from t-mobile?

 

[Zendroid1]

No freebies probably.