Thanks for the fast replies
I am interested in one day getting into astrophotography, so I'm after a good quality scope that's with me for the long run.
With the pricing for the scopes, I was looking to buy from the US seller, Optics Planet, since the prices there including postage are a lot cheaper than buying and shipping within Australia.
What's the deal with the dovetail rails on the EdgeHD? I was looking a HEQ6 mount to begin with, but I'm not sure whether the rails will only allow the OTA to be mounted on the CGEM or the CGE Pro?