According to my opinion, Aashirvaad Multigrain Atta is the best. As its name sounds multigrain, it has soya, oats, gram, wheat etc.
The first time my family used it was two years ago. It has a nice flavour. Roti from this atta comes good. As I am also a cook so I am sharing my own experience. Previous atta was not familiar with us. I didnt found it suitable for us but then we bought aashirvaad, and now we love the taste of roti and it is healthy too.
About packaging I always buy 10 kg of aashirvaad atta for INR 330. Ohers also have same price but this is best( according to me) . I dont know about big packaging likes 20 kg or 30 kg as I havent used it.