Not very familiar with IEMs yet, but have purchased several pairs of headphones through Drop. Take that into consideration when reading this review!
Overall, I'm very pleased! Compared to my current daily-driver, the HIFIMAN HE-X4, there's certainly a lot more isolation (obviously). The sound seems clear, crisp, and detailed. It lacks in soundstage and "fullness" compared to my headphones, but considering the price difference, I'm thrilled.
I've purchased these for the office. I'm easily distracted by other conversations while I'm in a zoom call, and these have been a huge help. It's also great that once the call is over, I can turn on the music and enjoy the sound signature.
IEMs can get crazy expensive, so start with something affordable. I'm very happy with these so far, and definitely recommend adding them to your arsenal!