Aircat 1150, if you use torque sticks.
I purchased the 1150 and the care instructions specifically state not to use torque sticks. Can anyone say why?
In any case, I only see three real differences between the two models.
1)The material of the housing
2)Lubrication: -1150 uses air tool oil
-1200 uses 5-30 motor oil
3)The 1150 is faster! 1,400 blows per minute compared to 950 (less cold weather).
The last two reasons are why I chose the 1150. Oh yeah and the 1200 is advertised for use on medium/heavy duty equipment.
My experience with the 1150 over the last four months I've had it has been very positive. The ONE time I put it down to reach for a snap-on impact was when I was doing tires on an '85 Buick. His didn't break the lug either. Then, I switched from a 22mm to a 13/16 socket and a few rapid taps of my aircat impact later the lug begrudgingly came off.
I love my 1150. The only things I don't like about it is that the trigger isn't very responsive. It's pretty much on/off. But the variable power settings help compensate for that quite a bit.