Recommendation for battery grip and batteries for T3i {Please}

I always do a search before asking as so not to keep asking the same question over and over...But so far all I found was people talking about the weight of a battery grip.

and I come here as I trust the opinions here.

What I am looking for is a recommendation for a battery grip and extra batteries and where to get them. *

Also, not long ago I did purchase some Wassabi batteries but they do not seem to hold a charge as long as the original Canon battery. So I need some help on gettings some good batteries along with a battery grip.

Thank you for your help.