Some of the earlier forms look too similar to each other.
Also you might want to look into using thinner forms.  Fontstruct is a good and free source, and you can actually export your fonts from it.
thats what ive been using
so uh
edit: also by a 
 complicated  i mean the sounds for each letter have a few characters in them from english so its better writing and typing than actually speaking, i like making complicated things