Fuel Gauge Sending Units compared

On a related subject.
Sometime soon i'll be doing a custom gauge panel with Autometer Ultra Lite gauges.
Let say the stock sending unit is 80 - 10 like the original poster said.
Several different autometer gauges are available with differing ohm ranges. The ones that are closest to 80 - 10 are.
73 - 10
and
90 - 0
Which one of these should I order ? or which would get me closest to a properly functioning fuel gauge ?