Beats by Dre.. which one for me?

I'm a teen (15), and I was planning on buying some beats by Dr.Dre. I was thinking of either getting one of the solos in white or the studios in white. I don't know the difference between the solos or solos HD, what are the differences? I definitely do not want the in ear headphones, to me they are uncomfortable. I want over ear because I hear the quality is amazing and I find over the ears more comfortable. I tend to listen to a lot of rap and hip-hop but occasionally listen to light rock. Is there difference in quality of music between different types of music? Do the headphones isolate yourself and block out everything? Is the quality of the music really that good? Do the headphones scratch easily? Are they durable (solos & studios?) Easy to carry around? Are the headphones worth the $? (if not, can you give me a link to a good pair of headphones for the money?) And other stuff that is useful for me to know about the headphones beats by dre... Thanks for the help