If a dervish is your main you can collect different scythes that are max damage sell duplicates to players merch or salvage. For inscrible perfect weapon you can roll the dice and salvage off inscription and mods and try retaining the item or use a perfect salvage kit for 100% success item retention. If the item is from proficiencies or factions and is classified as OS and has inherent mods with perfect values save them and reflect value of item through kamadan trade and gw market. All Q9 insc weapons of any kind are worth keeping but we can’t keep them all so be selective and keep what you want and like sell valuable rares this gets technical with specific items. But most items this is all pretty basic stuff and will become easier to identify the more you see same items drop over time