Hi Blackcat, my suggestion would also be to go for the Dob. You can then easily afford a decent EP or two (with cash to spare), and if you're in an urban area a light pollution filter would serve you really well for picking out deep sky objects, especially all those juicy southern nebulae. Spending quality time under the stars learning to find objects with a Dob will also give you a much greater 'feel' for the sky than using a computer to find objects for you. And a great many more objects will be within reach too with 8" compared to 6"! And you'll spend almost no time setting your telescope up too when it's observing time.
The flip side is I know little about astrophotography and would defer to others on that. If that's your goal, then different advice might be better! I like finding the clusters, nebulae and galaxies even if I have to do it from a Melbourne sky, so I am biased towards the Dob for that.
andy
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