I don't have any comparative evidence on which is better. What I do know is that the AOX is a multi generation technology now. It appears to have improved over each generation to its current point. It integrates very well with SBIG STXL camera. There are some minor glitches with the software but overall I can say I will never go back to conventional guiding again, such is the power of this technology. I am assuming that the Starlight Express AO has undergone similar development. That is about all I can offer.
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