Hi Henri,
Dollar-wise you should be able to get a much large diameter SCT/Mak than a Refractor.
Length-wise (for transport etc) you will get a much shorter scope with an SCT/Mak than a Refractor.
Colour Defraction-wise I will leave to the experts, but I think you would need to purchase an Apo or Semi-Apo Refractor ($$$) to match the SCT/Mak.
I notice you are in Mentone. I lived upstairs of the Tattoo Studio that I worked in on the corner at the Mentone Intersection, opposite the Fire Station (one of Melbournes Brightest lit intersections) and yet I saw Halley's Comet from there!!! That tells how bright Halley was!