Thanks to everybody for replies.
Chris, as Steve suggested, definitely stick with your ED80 for at least a year. I would say that your next step should be guiding, it will improve things significantly. You already have a good mount and ED80 is a great scope. Upgrading later will be easier than for me (with EQ5).
And I have been following the new ZWO camera thread... I bought my ED80 and EQ5 in 2007 and after a few years of happy imaging I had to take a break for few years only to "resume" about 6 months ago. It felt like waking after being 20 years in a coma. Everything has changed and things have advanced so much.
Perhaps I should take another break and in few more years I will be able to hand-hold my ED80 and get Hubble-like images