Thanks for your feedback guys, much appreciated and glad you like it.
I've adjusted the contrast slightly and you can view the new version below:
http://www.astro-image.org/page/ds/etav2.htm
That's one problem I need to deal with more carefully because my monitor has such a wide gamut and what looks fine on my screen may not look right on another.
I've included a screen capture of the corresponding images to show the difference in the histograms:
First is the original.
Next is the new version.
I do like my images to have a slightly brighter background (as can be seen from the histogram not starting at around zero), it's just a personal preference and that's what I pass on to others too when asked for advice.
As you know this avoids clipping the black point.
I also like the colours as they turned out, slight salmon hues and hints of greenish/blueish areas like Rich said, just a slightly different feel to a very popular target like Eta.
It's actually fairly close to how the "colour ratio" was from the camera.
Anyway thanks again for your feedback, just what I was after because you tend to go cross-eyed after looking at your own image for such a long time when processing, it's good to have other's opinions.