It is always a bit of a gamble, but my philosophy for tools that I use
relatively infrequently (which in my home shop is almost everythng) is a used
quality brand over new cheap junk. I'd go for a used Bosch, Hilti, or similar
over a new Harbor Freight piece of junk. Even a Milwauke rep at an industrial
show once confided that nobody makes hammer drills like "the Germans." I saw a
Hilti 1/2 inch hammer drill with a case, a few drills and a bunch of fasteners
at a Pawn shop the other day for under $50. Scraped up and dirty, but seemed
to be in excellent mechanical shape. I was tempted, but I have a similar Bosch
that has been going strong for years.

Mill

Any advice regards buying a new hammer drill that may not get much use? HF?
Can't afford, nor can I justify, a good one, like Hilti, which would be my
first choice if I worked with it daily.