I do buy alot of store brands... but there are a few items , that I really prefer name brand of....
Saltines..... store brands just do not cut it
Peanut butter.......... I prefer Jif... but usually store brands are ok too
Sodas......... I'm fine with store brand fruity/rootbeer/lemonlime... but if I want a coke I want a COKE..... the real cokes/Dr Pepper, etc just taste better than store brand to me...
I actually prefer store brand yogurts
Bread..... I prefer Wonder or store brands... some brands do not keep as well.