This one is my third Makita drill. I have used 2, they were models below that the (750w) that's why I went to the model above. Question efficiency: it's the bomb. Very effective and very fast in concrete, it fits like butter. Practical and positive side: the double chuck, the LED that illuminates the place for drilling, the vibration absorber which is relatively effective, the rotary knob very accessible mode selection and easy handling. The rather long power cord. On the negative side: the weight (but we get something for nothing) the chuck release ring that lacks grip (too small and impractical), it does not change chuck every 5 minutes anyway. comes in a plastic case in which it occupies almost all the space. I do not put it 5 stars because of the small negative reserves, but I recommend it for its effectiveness puncher. After reliability and durability issue I can not yet say. I hope my opinion, the most objective, may be helpful in your choice.
