Default Note p605 or p607t?

Hi there,

I am considering to get the note tablet. I need some advices from you guys. Is there any other advantage to get the p605 (unlocked international version), beside the ability to make a phone call, compared to p607t? I am a T-Mobile customer
Do I still receive the $25 google play store credit if I buy the p605 from amazon.com?
Thank you for help.