Helvetica is a popular font family which has been around since 60s and 70s. It has ever since introduced a lot of font versions. In the early 80s, the entire Helvetica font was redrawn by its creator Linotype which corrected and made differences as to subtle elements and features which had been very consistent since. An all-new design as to width and weights were redone again for the Helvetica.
Hence, today the font has contributed immensely for both font style and type for everyone not only for commercial use but for general purpose. With its simple stroke and straightforward design, it is something that you must use ultimately, especially as regards the Helvetica Neue Lt Std. The latter being an all and improved version from the font family.
With it, you can make use of it for all your content purposes in mind so your readers can fully read it and understand it in the manner you want. Its obvious level of legibility is what makes it a crowd favour then and now. It goes both ways; whether uppercase or lowercase or a smaller font style or when applied with different colour or added with a media element. Its perfection is beyond description.