I will regularly be downloading RAR files. I need a good and ease to use RAR extractor. I will prefer to have something which is free, but in case you think that there is something better which just gives a free trial and is a popular software, I will manage.
I first started using it because it had a feature I did not find in any other program ( freeware that is ) : find a file within one or more archives. Pretty good.
If I recall correctly, the newest version does work with multi-volume archives. Anyawy, if 7z isn’t to your liking, there are some other free tools listed here - rar extractor list.
I like WinRAR, but I don’t like the fact that it’s trialware
I prefer universal extractor and/or total commander for doing anything concerned with extraction/compression. They both borrow plugins from the original proggies whose functions you can customize using command line switches