Primo Water is "probably our best idea" at current valuation levels, Barrington analyst Michael Petusky tells investors in a research note. After traveling with management, the analyst calls Primo's "highly favorable." The company reaffirmed that it will have technology fully in place on all its 17,000 outdoor refill machines by the end of Q2 in 2019, which will allow Primo to respond quickly to any mechanical issues and limit machine downtime, Petusky writes. He views the current weakness in the shares "as an historic buying opportunity" and keeps an Outperform rating on the name with a $20 price target.