Q: Why should I use M3 Sakura?
A: M3 Sakura features a completely customizable GUI and employs a unique touch-and-slide navigation/control currently not found in any other flashcart. The controls are much more sensitive than M3 Real's original firmware (TouchPod), and overall much better-looking. M3 Sakura also has an integrated text viewer, image viewer, music player and video player, so there's no need to run a separate homebrew (e.g., MoonShell) to open various files. You can find more information on how M3 Sakura looks on the DS including videos here. Skyline969 has also done some comprehensive video reviews on M3 Sakura with an extensive commentary. His videos will give you a very good idea of what it is, but the firmware has seen some improvement since he made those videos.