Price for futaba 3151 and JR DS 821 is the same $ 29.99 but far better response from DS821, also a analog (standard) servo drains your batteries much faster.

I try to read anythingh related to this hobby, electronics, aerodinamics ( some people dont even know why a plane fly) etc. that way I can decide better in all aspects.

One thing is sure, I use standard servos no more.