Hello friends, my opinion regarding the butterfly grinder compare to previous level of grinding it is very convenient to grinding certain things may be with in a time. this is basically used to grind with in a house i.e. it cant used in hotel or restaurants because of the quantity a search. so, it is house requirement purpose only. and it is useful to every housewife in there kitchen. so it is trendy, useful as well as good durability a -serch. in many cases there may be difficulty in handling big grinders but it is light weight as well as durable. and it will give smooth and fast grniding capacity compare to others. so, I think that it is so much durable, friendly useful for housewives and attractive and comparatively reasonable rate. so, butterfly grinder is a best product used in kitchen accessories.