Um, I liked Lilly Allen and Amy Winehouse's records as far as new pop goes. That's about it though. It's not immature, there is no mature way of listening to music. Just fucking listen to it. I listen to as much different stuff as I can, and when I get into something, try to get into something because it was reccomended, I try to listen to everything I can by the artist.
But I can't be bothered to try every obscure new pop artist when there's so much better stuff in my opinion.