what is yr current location bc here in doha u will find supermarkets in every area... its better if u locate somthing closeby.

For basic household stuff Family food centre is the right choice. for food items mega mart got good stuff...i m never satisfied with C/F or LULU.. Giant store at Hayat is good too.

If u have marhaba megazine (availble everywhere) u can easily decide where to go and wat to buy.