Trading at its most reasonable valuation since 2016, this pet healthcare diagnostics leader could be a once-in-a-decade opportunity today.While the debate over whether it's better to pay for high-quality or high-growth businesses will never end, the easiest solution is to find stocks offering both.One company that fits this best-of-both-worlds billing is Idexx Laboratories (IDXX 0.19%), offering leading pet healthcare diagnostics operations. Delivering annualized revenue and free-cash-flow growth of 10% and ...