What are some alternatives?
When comparing MagicISO and WinISO, you can also consider the following products
UltraISO - CD image files are easily created with UltraISO.
PowerISO - PowerISO is a virtual drive that allows users to encode, burn, mount, and even encrypt CDs, DVDs, and BDs. The software can be downloaded from many platforms and sites online.
WinCDEmu - WinCDEmu is an open-source CD/DVD/BD emulator.
ImgBurn - What in the Heck is IMG Burn? We all need to copy discs from time to time.
xorriso - xorriso is a command-line (+Frontend) ISO 9660 editor, formatter and burner for CD, DVD, an BD.
DAEMON Tools - The most personal application for disc imaging yet.