PQs all depend on if you capture all caches or just your unfound. I capture all as when I cache with my daughter and sometimes my son - there are many I have done which they have not done. That being the case my last PQ started in September and is still not at 300.
I just keep tickling my file and make it work for me. Depending on your caching style, what you are looking for - there is no one answer to PQs.
Just general knowledge and then you fine tune from there. So of like cooking - tweek it and add the spices you like.