Ken, another variable in the equation: Coatings. See below.
Quote:
the 80mm believe it or not has fully multicoated lenses, and very sturdy construction. The 90mm is the same except it has the same coatings as most of the other good quality refractors sold. Our 102mm and above refractors are made by the same manufacturer as Meade so they are good quality.
--- in email from Dan at AOE
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I'd say contact AOE by email or phone and discuss the pros & cons with them. I've found them to be very good at providing information, and willing to patiently answer question after question.