I got to thinking when I read Don's post below about how many indices one uses. It has been said that beyond the Catch 22 more indices don't help that much. Yet I noticed 21forme says he uses around 100 indices but is still using a low level count like Hi-Lo. Damn, a 100 indices must be a bitch to memorize for very little additional gain.

Would it be better to use a higher level count (like Wong Halves) and forget about using more indices than the catch 22. Is there some break even point where learning a higher level count is better than adding any more indices? Any studies done on this?