Investors may want to take a closer look at these quality companies, which are trading at reasonable valuations.There are a couple of different ways to approach investing in the stock market when it's near an all-time high. Some investors may choose to ride the momentum higher or simply put their money to work in market-leading growth stocks. Others may prefer to go searching for value stocks or dividend stocks that are trading at less expensive valuations.If you're in that latter camp, consider Essential U ...