This is what I use, although I did have some trouble recently attempting to use CDBurnerXP to convert a Nero image file (.nrg) to an .iso file so I could burn it. The program does have an option to convert it, but in my case it didn’t work. I used a freeware NRG-to-ISO converter and it worked fine.
Other than that, for normal burning/copying operations I haven’t found any downside to CDBurnerXP, which is (as you noted) freeware.
Used to be my favorite CD burner app back in the day - mostly because of the hilarious name/icon combo (Nero Burning Rom(e) and a picture of the Colosseum burning) - funny stuff I thought
Anywho, got bloated, plenty of better/free options now. (Not that I’ve burnt a CD/DVD in what - two years, three…)