Well I got an iPhone so makes it easier I guess unless other phones have made an easy way to add music to your phone I have like half my iTunes library on it to save space, but that's still like 980 songs
I don't have an iPod atm so 3gb/16gb on my iPhone 5 is music
Once I get an an iPod classic i'll just have Nicki's albums + mixtapes and the odd Kylie/Arlissa song