Considering those are marketed towards kids - "appropriate for ages 3 and up" - those can slide........especially considering a 3-year-old shouldn't have a device other than a really cheap iPod that plays music in the first place. I didn't even get an iPod 'til I was 13. And it was the Mini. AND I had to share it with my mom. AND it only held 4GB of music. BACK IN MAH DAAY!!!! :P
A few months ago I heard every single Beats headphone (on-ear and over-ear) they offer at a Best Buy that's close to a university I attend. Personally, I really like the Mixrs. They sound like my Ultrasone DJ1 but are more harsh (which I don't like for listening but works well for DJ'ing), love the look, and I was actually surprised they sounded so well. So, in my honest opinion, the order of sound quality goes:
Mixr, Beats Pro (they sound exactly like my Ultrasone DJ1 except a bit less bass), the new Studios (MUCH better than the old ones), Executive, the old Studios, gonorrhea, being trampled, being stabbed, being castrated, brain dead, HD Solos. Why would anyone in their right mind buy the HD Solos? What are you, deaf? Literally, you'd have to be legally deaf in order to think the HD Solos sound decent. I skipped out on the wireless model. I have a feeling they're just the same as the Solos, but wireless. If that's the case, no thank you. I'll take cyanide instead.
I also got a chance to play with the Beats Pill. Not sure which model but it was pretty big and, again at Best Buy (this time it was the GTA V launch party). They were decent with anything that has a Rap/Hip-Hop beat, so Rap/Hip-Hop (duh) and EDM Trap sound pretty good. Anything else was pure garbage...........and still better than the Solo's. I REALLY hate the Solos.