I absolutely love mine. I only use my regular drill anymore for small jobs where its too hard to control the torque and shear off screw heads. For anything else the impact drill is the tool I use.
I drove a thousand deck screws this summer and even the cheap Ryobi branded one that I've got did fantastic. for drilling larger holes or with larger bits they are fantastic too, much less stress on your wrist and arm as they just hammer their way around.
They are fantastically loud though. I wouldn't do much of anything with one without some hearing protection.
Really, this is the first "new" tool that I've really embraced in a long time and I've never regretted buying it as opposed to a new regular drill. Mine just has the speed connection for attaching bits, and the best drill bits are still the traditional kind, but I've added an adaptor and that works great too.
