If your CGX mount is permanently situated or on wheels and portability isn't an issue, it would be a good mount for a 6" refractor such as the ED150 in the classifieds (which happens to be in Adelaide).
If you want to move to a more portable mount you might need to consider something like a Skywatcher HEQ5 with a Skywatcher ED120 refractor. There's a massive difference in portability between those two setups but the ED120 will still give nice planetary views without breaking the bank.
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