What are the best Oblivion mods?

So I played almost everything there is on vanilla Oblivion(I had it on Xbox360 cause my PC sucked). I just got it on my new PC but I was bored because I had done everything before. So are there any mods out that can give a whole new feel to the game. Like a new main story, large new areas(I have played all the expansions as well) Just something that will give me an excuse to play this game more. I found the mod page was a little confusing because I don't know what exactly to look for.