The new PCS Thinline symbols could be described as age generic, with a more detailed look and clean lines compared to the PCS Classic symbols.
As with most symbols, different individuals will have their own preferences. When you can, it’s always a good idea to involve the user of the symbols and see what they prefer. Or if you’re like me and you make lots of resources, you’ll want as many symbols as you can get your hands on so that you have all available options.
Either way, you can have fun with these additional options at your fingertips.