Its ZIP algorithm is very fast and also supports multi-core work, so speed won't be a problem. It allows you to create Zip, ZipX, TAR, TGZ, 7Z, and EXE files, and it unzips most formats, including RAR or ISO.
Its interface is simple, very similar to that of most programs of this sort. As usual, you just need to select and drag files to the program window to create a compressed folder, or select the compressed folder and drag out the files you need.
Of course, it integrates perfectly into the operating system so you can extract or compress files quickly without opening the application.