How do people currently code in SVG's in their pages?

I have seen this thread, from Todd a great front-end developer:

<http://toddmotto.com/mastering-svg-use-for-a-retina-web-fallbacks-with-png-script/>

I have also see this one, from Chris another well known developer:

<http://css-tricks.com/using-svg/>

People have used the HTML Element "Object", however I would like to see some people that already have more experience than I. What is best practise for using SVG with png, on the pretence that you have to support only IE8 and above, the focus being on targeting newer browsers.

I have the .png's for most of my .svg's with .ai's of the most of the graphics.