I've got a 120 or 119 stronglight spindle on my PX10 fixie, and the chainline is about perfect with a Stronglight crank. I can't recall what I've got on my UO lengthwise; I used Sakae french cups with a Sakae spindle and crank, and it works fine, good line and all that.
Spindle length and taper is almost completely crank dependent, esp. with older cranks, so there's really no good answer.
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