Soundcore always impresses me. I've been with them since they're Liberty 3. Even when I have been able to start affording some more expensive options, I always feel like it would be a waste of money to do so. These Soundcore Earbuds punch way above their weight class as always, and the new charging case features are really neat!Things I liked:Sound on these is incredible! The clarity in each range (bass, mids and highs) is there and frankly surprisingly effective for earbuds. They're not quite the same quality as my Sony headphones, but, they're earbuds, so I'm amazed that I'm to the point of even starting to hope they could compare.One of the first things I noticed is how loud these can get. For those of you who don't like this, it's okay, you can set a limit to the volume. For those of you who found yourselves trying to stick the earbuds further into your ear at time on the Liberty 4 Pro, that is definitely not necessary on these! I usually was close to full volume most of the time on the 4 and now I'm usually at half volume on the 4 Pro. I'm not sure that's how it should work on paper, but that's how I find myself adjusting the volume nonetheless.The new case features are cool. Some say they'd never use them, but honestly I use the Noise Cancelling adjustment all the time. And the remote camera I plan to use a lot.I love being able to find my earbuds and case! It would be nice to be able to use this functionality even when the earbuds are still inside the case because frankly, I misplace my case a lot and spend a good 10 minutes or more until I find them in some weird place where I decided to set them down. This should help half the time, but the other half, I guess I'll still have to play detective when I lose them.The earbuds charge fast in the case! Wow! And I can actually see the progress thanks to the screen on the case. I absolutely love being able to see the current battery life so easily! The battery life lasts a long time for these as well. I usually don't run into any issues with battery life even though I use these all the time. But if they ever start to get low, I usually just leave one earbud in and charge the other the swap. The case does seem like it could have a bit more battery life, but it's not bad, so I can't criticise it too much.Many more features and great things that are true about the 4s I could say here. Their app is great, and I really recommend getting familiar with it and making the most of these earbuds as a result!A few things I wish could be improved:Heart rate in the ear on Liberty 4 was an okay idea, but the lack of app functionality, integration capability and accuracy of it made me not use it much. Besides, with my exceedingly accurate Garmin devices, it was completely unnecessary, so I'm glad they threw it out. That said, I loved posture detection, and instead of getting rid of this feature, I wish they would have further improved it but just left the default off as I understand it wasn't for everyone.Holding the action button instead of using a double press like in the Liberty 4 to end the call is... well... kind of annoying. I'll say goodbye to someone and have three seconds of awkward silence trying to end the call. I would love for this too be improved, or at least be an option.The mics are great, one of the best in terms of earbud mic quality. That said, there was virtually no improvement this time around. I like the improved sound, but maybe next time SoundCore could come up with ways to improve mix quality even further. Being a musician who regularly uses a Rode NT and Shure SM58, I won't be satisfied until I get this level of quality. I know it's dreamlike thinking, but it is nice to strive for!The volume controls are just so hard to use. I put in a recommendation that they add volume controls to the case which may be useful. But the volume controls on the earbuds, although nice to have, just don't register very smoothly. I don't want SoundCore to get rid of this, but I do hope that in the next gen this is fixed and more smooth.Swipes on the car are usually really smooth, but taps are hard to get to register. It would be nice to have some kind of improvement here.Overall, fantastic earbuds, and I hope the company continues to come up with new things and improve their earbuds! I'll be using these every day until the Liberty 5s come out!