Colour management and working space

I read this morning some very interesting articles on colour management, calibration, working space, shooting sRGB vs Adobe RGB ...I am somewhat ashamed to acknowledge that I wasn't aware of some of the principles. One thing is certain, calibration is important in a photographers' workflow. You want to be sure that the colours ar rendered accurately on your devices and on print.
For more details please have a look at the following link from Arnaud Frich: 
http://www.color-management-guide.com There are however so many other criteria to take into consideration that it makes things a bit complicated.
For me simplifying the matter, what it comes down to , besides calibration, is:
Am I shooting specifically for print and want to show wider range of colours- albeit sometimes with only a subtle difference? or am I more interested in showing the images online and look as well as intended? If printing is the main object, then AdobeRGB offers more range but files need to be converted before you download them to the web to avoid dull looking images...
I intend my pictures to be printed and show accurately on the web and customer's desktops/mobiles..but my main goal is to have a beautiful print. It is a personal choice at the end of the day. To illustrate the point, below is an example of an image I took recently. One file was converted to SRGB before putting on the web, the other one was kept in its original format. It's up to you to see the difference and determine which one you prefer, right?