You've pushed this to the limit, Richard. I really like this last one. The rings are great, as is the outer space, starry atmo.
Two things that bother me; the plants in front seem out of place, and the water is too 'wild'. The highlights too 'bloomed'. Also, the rocks on the left side seem to be like ice. It's nice, but maybe should not shine through that much? But I guess in this stage of a complex situation it is very hard to change just one aspect without getting trouble elsewhere... I know I did.