An 'N/A' for Perk means you need to boost your Smithing past 100 with Alchemy to improve it beyond Flawless - specifically, you need to max your Smithing level to 100 and then use potions of Fortify Smithing to boost it beyond that, at which point the weapons in question, which don't benefit from any of the Smithing skill Perks, can then be improved beyond Flawless quality.

Whether you're looking to tackle some of the more bizarre Daedric quests, or power-level your Smithing to craft Dragonbone and Daedric weapons, the weapon rankings below should be of some use to you, but before you dive in there are a couple of quick things to bear in mind about how we've structured it all:

Some are available early on, too, through side quests or otherwise, which can be a massive help for playthroughs on harder difficulties, or for those with a burning desire to power through to Skyrim's late-game content. For almost all character builds, knowing the best weapons in Skyrim for each type is going to be worthwhile.