Take a look at those that are increasing their distribution rates the fastest and balance that with both distribution coverage and where they function.
For example midstream MLPs generally trade at a lower rate for distributions than E&Ps because of less risk. But midstream is likely to have a bit lower DCF in 2012 because the VERY high spreads in 2011 are not likely to be repeated according to several of the midstream companies. You then need to consider how long interest rates will remain low because that will hurt MLPs when it happens for those MLPs that have a distribution CAGR less than the increase in interest rates.
FWIW, I do not every post what I like. I do share what I bought. I bought into RNO when it got under 18. Also EPB about 32 on the scare of no dropdowns. Added to ETP on valuation in November. Ditto for EVEP and LINE. Reinvesting ETP, OKS, EPD, ETP, MWE. I do not plan to add any MLPs AT CURRENT PRICE LEVELS because I am over invested and also I tend to buy on bad news. I do not buy into the new IPOs, but wait for a quarter of two or ten to see what they do.
Also remember my average holding in MLPs is approaching 7 years. I am a holder, not a trader.
I also always speak with management. Crazy if you don't and get a feel of a company. If someone other than a secretary will not speak with you, invest elsewhere!