The difference with bootmii and priiloader is that priiloader replaces the system menu, while bootmii is part of the console's boot sequence.
Normal Wii: switch ON -> Boot0 -> Boot1 -> Boot2 -> System menu
bootmii wii: switch ON -> Boot0 -> Boot1 -> Bootmii loaded from SD, or Boot2 > System menu
priiloader Wii: switch ON -> boot0-> Boot1-> Boot2 -> Priiloader (same named as System menu) -> System menu (renamed)
bootmii+prii wii: switch ON -> boot0 -> Boot1 -> Bootmii loaded from SD, or boot2 -> Priiloader -> System menu
From Bootmii:
- If you have the SD card inserted with bootmii application on it, it will be loaded instead of the real Boot2.
- You can disable the delay, just edit the .ini file on your SD card. set delay to 0.
- You can choose to automatically load System menu, Bootmii or HBC.
- You don't need priiloader to disable it! priiloader doesn't make a timer to do something to bootmii, priiloader is launched AFTER bootmii if you select to launch System menu.
From Priiloader:
- You can choose to automatically load System menu (default), or HBC
- You can choose to launch an installed homebrew.
- If you launch an installed homebrew directly from Priiloader, you won't have AHB access. install a forwarder and autoboot the forwarder instead. (I think it depends which version or priiloader you are using, there a version with AHB support)
You can have both Bootmii and priiloader installed.
- Priiloader replace the system menu, so if in Bootmii settings you choose to load System Menu, it will in fact load Priiloader, which will itself load the renamed System menu or HBC or a homebrew.
- If you set Bootmii to load HBC, it will not load priiloader at all, and the priiloader patches usually applied to the system menu will not be present.
when you exit a game, it reloads the System menu, but if you have priiloader installed it instead load priiloader which will load the System menu (or any installed homebrew you selected).
If the console you are hacking can have bootmii installed at boot2, prefer this to autoboot HBC, it will be faster.
if you want to autoboot into a homebrew, then you will have to use either priiloader, or a
modified bootmii (which is an application on the SD card launched instead of loading Boot2) to do something else than bootmii, for example load USBGX forwarder.