hi Mark, l too am doing the refractor merry-go-round, the Orion/Skywatcher series use FPL-53 glass and the W.O 110 uses FPL-51 so you should expect slightly better colour correction in the Orion/Skywatcher.
l have a Saxon ED100, same as Orion and the colour correction is great.
W.O focusers are generally very good and l think the 110 is 2.5" which should take a heavy camera without any trouble.
Both seem excellent value for money.
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