Hi there, i currently use an opticron hr66ed which i have had since 1996, yikes thats a long time! I was wondering how the new versions of the 66 and 80ed compare with mine, have there been any significant changes? Are the eyepieces any better? I use either 20xhdf 30x or 28xhdf. I would imagng they have come on leaps and bounds, but I dont have anywhere I can get to see them, thanks in advance, michael