One of, if not your best, image Col
...you have finally mastered stars processing
Incredible detail in both images but on close (full size) inspection No2 breaks down pretty badly, so I give it to No1
Excellent resolution of structures (as opposed to artefact driven pseudo detail) but without significant artefacts, wins over colour palette any day in my book, top result
I
and Marcus Davies 
are wrapped with my average guide errors of +/- 0.2 arc sec
with autoguiding
...but 900 sec
unguided with such resulting sharpness, is, well, truly unbelievable mate, super duper...great stuff
Mike