Hi there Harry,
I bought one of these Skywatcher Black Diamond ED120 myself early this year, more so for use for astrophotography. I have it mounted on my EQ6 Pro together with an ED80 which I use as a guidescope. To put it simply, I agree with Chris's comments - they are one heck of a scope. Of course they do not really compare to Takahashis etc, but bang for buck I think they must be right up there. As they say, a picture is worth a thousand words, so here are a couple of links to some images with my ED120.......
http://www.iceinspace.com.au/forum/s...ad.php?t=43158
http://www.iceinspace.com.au/forum/s...ad.php?t=41550
Hope this helps in you making a decision.
Cheers,
Daniel