Summary: I've been using only Milwaukee products for over 20 years, drills, cut off saws etc...fortunately I've only had one injury so far that took about a year to heal- and it was with this drill. Technically the drill works great, but the trigger mechanism is dangerous. A word of advice...ALWAYS unplug the drill to change bits and secure it away while working as not to bump into it and drill yourself.
Summary: I had a similar 0375-1 611B for 7 years. I did not use it a lot, but it was great for the tight spaces, and had plenty of torque. Recently the pinion gear stripped due to a poorly manufactured housing which allowed the motor to move excessively (according to a Milwaukee bulletin issued in 2003!). I bought mine in 2007 for $140, and It is now worthless junk as the you can buy any part for it but that one, which has been discontinued, rendering it useless. This a $2 part.
Summary: My final purchase decision was based on stator size. In my experience Milwaukee motors always seem to outperform their amperage rating. Safety: I mounted the "DEWALT DWA2509 Impact Ready Rapid Load Holder" thus I don't care about how easily the trigger squeezes - actually quite pleased by this. I pay attention to what I'm doing. If someone doesn't pay full attention, no amount of safety features and protocols are going to save them.
Summary: I've used the Milwaukee Close Quarter Drill for years and when the old one would wear out I'd get a new one. The design of the most recent version of the drill is larger than the old one, which I don' like, and the trigger area is much larger which I find distracting because sometimes when I set it down, it just has to slightly lean against some other tool laying next to it, and it will start running on its own.
Summary: Have to be very careful. While using the key to loosen the chuck it is easy to trigger the switch which powers the drill and can cause injury. I was close enough to the electrical receptacle to pull the plug from the socket.
Summary: Fine as to drilling operations, I got it to replace the previous model when parts were not available for it. The trigger is way too big; it is very difficult to operate the trigger, particularly release it without letting go of the whole thing. I wear a large glove, not with tools, so my hands are normal sized. I find this drill very difficult to use safely. A trigger that only contacts the index finger or has some form of guard would be much better.