Whats the best weapon in oblivion

The best weapon if you are a high level and have The Shivering Isles expansion is the sword you receive from the dead Orc at the end of the quest for Xedilian. It is significantly higher quality/durability and normal weapon damage than Umbra and somewhat more than a Daedric sword; it is equaivalent or slightly higher quality/durability and normal weapon damage than a Perfect Madness sword. It also has 40 fire damage during the day, and 40 frost damage at night, and 80 uses for each. The best part about it is when it transforms from night to day or vise versa, it recharges its magical energies, so you get 80 free charged uses every 12 hours. In addition to that, once you use it to kill 12 people or creature in a 12 hour period, the sword will recharge itself automatically, AND it will now have an absorb health attribute in addition to a more powerful fire-or-frost attribute. The only problem with this sword is that it is leveled, so all magic effects, uses, quality/durability, and normal weapon damage are relative to your own level; however, once you are level 25 or higher it is superior to all other one-handed blades (and probably all blades, the best Claymore being Shadowrend) in the game by far.---------------------------------------------------------------------------------------------------------------------------1--------------------------------------------- Added: by visceral relic There is a greater weapon, the mace of doom. This can only be acquired with the frost crag spire add on... But it's worth it. To acquire this weapon you need to go to the bedroom in frost crag spire and save the game, after doing this delete the add on from your hard drive (you can redownload) and simply load the game this will teleport you to a black nothingness However there is a random house that you need to jump towards and you will be teleported inside. After teleporting inside exit the house and you will be in a wasteland with three houses in front of you the mace is in front of you next to the fire. Oh and there is an unlimited amount of every sigil stone in the game in one of the houses too. P.s to clone objects have three or more of the same spell NON STOLEN scrolls and hold the a button on them when in the menu then WITHOUT RELEASING THE A BUTTON go to the item you want to clone and drop it. Whilst still holding A. And you can sell the stuff you clone like perhaps some certain White glowing rocks that recharge your weapons-£££££££££
Without mods (or enchanting), it is arguably Umbra.