Oblivion Good Shop Location?

Ok well in Oblivion I have around 120k from just stealing in for the Thieves guild and Quests, I want to use it on a really good weapon that does a lot of damage. Is there any shops that have NICE swords and etc? I want to use all this money on weapons and amour and the weapons in imperial city aren't too good...So where can I buy a nice weapon?