[GerryL]

mirror lenses.co.uk - your complete guide to mirror lens photography - techniques
This link was great Marc as I am having a better grasp/understanding of the Mirror lenses.
At first I didn't how they would have different number of lens elements/groups but after seeing the diagram of how the mirror lenses worked, I can see now that one that make a great difference in their IQ would be the actual lenses that it has inside and probably not the mirror!
I just haven't read as to which design is better, one having lesser lens elements/groups or one that would have a greater number??
The greater number might have more trouble letting more light (true color/image) in while the lesser lens elements would be too much of a compromise to be a very simple reflecting mirrors without too much lens/glass correction for contrast or correction for image distortion.

[GerryL]

Finally bought a mirror lens!
I'll be playing around with it still to see how it does but from the one's posted on the net, seems to be a decent lens.
Will update on this.
Thanks for all the input!