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I will assume with your budget your looking for an Achromatic refractor and you will be handling colour correction via a filter like Baader Fringe Killer or Semi-APO.
I recently went through this exercise and decided to buy a 102mm Bresser Messier f5.9, 600mm fl achromatic. This scope is not available in Australia but is available directly from Bresser in europe. I bought mine (OTA only because I have a iOptron goto mount that will handle this light OTA) from Amazon UK and the price was very good and it was delivered via UPS in less than one week.
Amazon also has the 127mm version on sale as well.
In my testing it has proved to be a very nice scope with some CA as you would expect with a fast achromatic but it is pretty much corrected with my Baader Contrast Booster filter. Its a great visual scope. The tube is well made, aluminium, with a rack and pinion focuser, long dew shield, well blackened and baffled interally. It comes with a nice Bresser 26mm EP. As you might expect there are some things that will need upgrading, like the diagonal. I replaced the original with a GSO 2" diaelectric, but that's all I have had to do.
I have used my 11mm Nagler on it viewing Jupiter and its moons and the image is better than my 16" dob, richer with better contrast. It doesn't have the DSO reach of the dob but for planetary work its greatand wide field the brighter DSOs are good.
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