Well the best thing about KMR is Richard Kinder.
Nevertheless, the reason I have owned this stock for 10 years now, is the safe dividend(distribution).
Then the distribution increases every year. Better then any bond you can buy. I use KMR as a replacement for bonds in my IPS(Investment Policy Strategy). The payment in stock rather then cash is tax free until you sell. If you hold unto and die rich then your estate has a huge tax avoidance gain. If you get old and need income then cash in your gains and incur the distribution gains in the tax year that will benefit you the most.
Therefore in summary the two best things excluding Richard Kinder are:
1) A high yielding stock investment (safe & increases every year)
2) Avoidance of incurring dividend income on one's tax return.