Is the compatibility still the same compared to base 38? Because I don't mind a little bit of loading if its all compatible
If you use rev19 in order to avoid controller lag that occurs with some USB drives, this is the optimal setup:
IOS249 - Base 57 - Compatible with 90-95% of games and has the fastest loading times. IOS57 the only base IOS that works with Call of Duty: Black Ops.
IOS250 - Base 37 - For use with games that do not work with Base 57. This includes games with USB devices, Monster Hunter Tri, etc. IOS37 can be replaced with IOS38 as a base if you plan on using Hermes' IOS223 (Base 37) with these games.
Note: With rev19, one is not able to choose IOS slots; using the installer automatically installs whatever base you are using to both IOS249 and IOS250. You can follow
this guide to accomplish the above setup, but keep in mind that the guide uses Base 38 instead of Base 37 for IOS250. The guide also includes the optimal setup for Hermes' IOS. In the unlikely event that something does not work correctly with the above setup, Hermes' IOS is a viable alternative.
If you use rev21 because you do not have controller lag problems with your USB drive, then NeoGAF's setup is the optimal one:
QUOTESlot 249 - Base 56 - Compatibility with most games and slightly faster read timing. Definitely use this for games with microphones and Wii Speak.
Slot 250 - Base 57 - Compatibility with many games. Definitely use this with Call of Duty: Black Ops. It is also helpful for some people for old games like Twilight Princess.