Just picked up the new Makita BTD144 3-speed Brushless Impact Driver.
http://www.makita.com/en-us/Modules/Tools/ToolDetails.aspx?ID=3163703-Speeds0-1300rpm/ 0-1300ipm
0-2000rpm/ 0-2800ipm
0-2600rpm/ 0-3400ipm
Brushless MotorProvides 20% longer runtime
Maintenance free
More power 1420 in/lbs vs 1330 (btd141)
More CompactOnly 5 1/2 inches long (about 1/4" shorter than the btd141)
Weighs only 3.3 lbs
Battery IndicatorShows a red battery symbol next to the speed selector when battery is getting low.
Also flashes the led light.
LED switchAllows you to turn the led on or off
The Makita drove faster and has a much better feel than the Dewalt.
You can also see in the video that the Makitas led is much brighter/more focused on the work area.
I will be doing more tests later this weekend and will post up videos.