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Hi, Ray,
Looks superb to me. Stars beautiful. Faint outer spiral captured. Tiny fuzzies in the distance show good form.
I threw some hard statistics at the colour balance. Your histogram black point and dark regions look perfect. Ignoring monitor calibration, and just looking at the numbers, your core, and the ESO core, are both 10% saturated, theirs a perfect pink while yours shows the tiniest smidgin of magenta. Nothing in it. So far so good. The star-forming region at about 5 o'clock from the core in your shot is about 18% saturated cyan-blue, whereas theirs is 28% saturated cyan-blue. If we pretend the ESO shot is the "answer in the back of the book", there is room for you to increase the saturation of the mid-tones a bit. You'd need to mask in the galaxy, mask out the darks to avoid colour noise, and mask out the stars, as they are already pretty strongly saturated. Just doing that should give better blues in the star-forming regions, but might make the core a tiny bit too warm compared with ESO. Nice problem to have!
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