If there's one rewards program you shouldn't go to is Slurpee. The last time they had some impressive content was when they had promotions from Sony but that was years ago. I have 100 points and I still haven't decided on what to get because there's abolutely nothing good there and it's been like that for a very long time.
I've gotten COG tags and cubix and my ex girlfriend got the portal socks, i have almost 16,000 saved up and had about that much after we broke up on our joint account, now I'm only getting points by myself and would've had over 30,000 by now.
Also, download the power up rewards app on your phone if you can and you get 5 points a day for checking in at a near by gamestop, ive been doing that for weeks and they add up fast
Also, I wouldn't even bother going for the gift cards or vouchers because 100 points=$100 spent there so a 20,000 point gift card for a $20 giftcard=$200