Panels - custom or use System? Maybe I'm not getting this but for Page manager (Panels) there is two options to create a page either Custom Page or use the System (Node Template). 

I need to create a Panel for the news page (/news). I could either create a Custom one and set the path to "/news" OR use the System node_view page and create a Variant where if the Selection rule = This panel will be selected if Current path is "news".

Which way is better? Should I overload the System with many variants where one of them checks if the Current path is "news" or create my own Custom Page for the news page?
A page provides a certain context.

For node_view, it happens to be a node.

There's no benefit to creating a custom page just to provide the same context.

You'd want to add a new page however, if you, for example, wanted both a node and a taxonomy term as context.