Thanks for the replies guys, however I wasn't personally asking for a particular reason other than curiosity on what YOUR take on the different areas where. Someone classified Sanur as the 'more mature area' in a previous post and it got me thinking. Life is what you make it, and none is far away in the scheme of things.
I did read on a facebook page yesterday an article, while it had more information it was summed up as 'who is it for' as follows
Moderately wealthier travellers, people who prefer a not so crowded beach, people who like a good but not hectic nightlife scene
People who prefer green valleys to the beach, people who like arsts, culture and historical places, honeymooners
Low to medium budget travellers, surfers and people who like being close to the beach, clubbers and people who prefer an assorted dining scene
Budget to moderately wealthy travellers, people who prefer to stay near a beach that is quieter than kuta, partygoers, shoppers and people who prefer a great food scene.
Wealthy travellers, honeymooners, people who prefer a stay with coastal views and direct beachfront access, people who prefer great seafood dining options
Wealthy travellers, families and honeymooners, people looking for direct beachfront access, people who prefer a whole resort experience during their stay without much exploration outside their hotel
Moderately wealthy travellers, honeymooners and retirees, people who prefer direct beachfront access, people who prefer less action and more relaxation
Medium budget to wealthy travellers, couples and honeymooners, people looking to escape the common crowds of the south, divers, sightseers and people interested in heritage Balinese arts and culture
Budget to midrange budget travellers and backpackers, people who like a sense of culture and nostalgia, business travellers
It goes on to list good and bad, you can read the full article on Bali Addiction facebook page