You need to check your spelling btw. Nickelback is spelled with the "l" AFTER the "e" and Green Day is two words. you butchered Rihanna like the butcher from Diablo butchers people, and you forgot the "n" in Romance.
Hrm, I don't like My Chemical Romance, except for one song, Basshunter has a large amount of decent songs, Rhinanna... who? Avril Lavinge, no thanks. Nickleback's alright to listen to for about a month, then they absolutely suck, for me, atleast. Greenday's pretty great... but what's H20?
So... my favourite would be a tie between Basshunter, and Greenday.