Q: Collection App, better to search or just query/cache volumes?

Hello, I am working on writing my own comic collection app and wanted to know if the preferred way of using the API is to search for the volume using the Search end point or if I can use the 400 requests to just get as many pages from the volumes end point as possible. I have caching logic so I wouldn't have to do this often, but wasn't sure if there was some sort of policy against scraping the volumes endpoint page after page in quick succession or not.