I prefer Makita, mostly due to their lightweight. So far my 4pc set has been very reliable. Tried rigid found they were to bulky and batteries died quite quickly. By the way talking bout 18volt set. Dewalt is nice as well but really they all make a good product.
Been using milwaukee for the past year seem to be great. Good battery life. I used dewalt before going to milwaukee, the dewalts are more powerful but the batteries don't last near as long and the tools didn't last either.
I have the Makita 18v lithium impact drill set (the white and black) drill set and love them. The few things that I love about this drill:
1. is the light weight but yet awesome torque it has. It is lighter and more compact than the milwaukee M12
2. The light function on the drill is also a sweet option. I have on many occasions used the light on the drill see a flashlight. The light is triggered by lightly pushing on the trigger of the drill and remains on for several seconds after releasing the trigger, you don't know how handy that is....awesome. Again the milwaukee M12 light will only come on while using the drill and will shut off immediately after releasing the trigger.
There are several guys at work that use the milwaukee M12 and every time they grab onto my Makita they tell me that the next drill they're going to get is going to be the makita.
Did anyone get a problem with the M12 set where the charger is throwing out a faulty battery pack error? Happened to both batteries and the same thing happened when I went back to the store to swap units.