My tumblr page, yo: http://heyitsmario.tumblr.com/
It's all opinions so there's no right or wrong answer unless there's no guitar and bass in the song. Imagine if we got "What Makes You Beautiful" by One Direction on Valentines Day week and that got a pro upgrade, the majority of these forums would be outraged but there would be people who play RB being happy about it.
Wishlist (possible artists):
 The Killers
 The Cure
 Sum 41
 Linkin Park
 Green Day
 The Offspring
You're right that there is no one right choice to make everyone happy, but you're wrong about my point, which is there will be a song that makes the most people happy.
Being that the forums make up a good chunk of pro players I'd say forum reaction is a good indication of "right" or "wrong" choice for upgrades, as opposed to forum reaction not usually being a good indication of song and artist choices.
Originally Posted by Gamertag
It's too bad because now I'll have to cut some songs from my wishlist and think more before purchase a song.
It's funny that SCEE took several weeks to update all songs on Sale! and 'till now we have some RBN songs missing, but took just a few days to raise the price of all RB3 singles and packs (actually, I didn't checked all).