Hi Tony
I think the second version is more natural looking, sure it isn't as tight but I guess you have to decide what you want more, tight stars but a fakish look or less tightness but a more natural appearence...?
Tough decision at times
The best thing is to get precise focus and maintain it throughout the exposures as the temp chnages. Get as much exposure as possible to increase signal to noise and then you can sharpen harder with reduced artifacts.
Good work in trying the reprocess though
Mike