I do a fair amount of DIY and got an Makita impact driver after struggling with some jobs using a Makita drill/driver.
Best tool I've bought as it's brilliant for a lot of jobs.
I use the drill/driver for lots of jobs still but the impact driver takes over and makes life a lot easier and quicker.
I totally agree. I've got an 18v Makita Impact Driver. Best thing I ever bought (along with the combi drill)! It will drive 4" 12's and coach bolts easily. Word of warning, easy to overtighten, buy decent bits and dont cover the vents.