Im gonna state pros and cons right off.
Firstly the pros:
1. These sound phenomenal
2. Very good anc, even beats my 5k haylou s35.
3. Very good body texture.
The cons:
1. The app is not very good. Doesn't let you control over much (like the r50i).
2. The sub-bass is not very good (soundcore r50i is better (1.7k))
3. There is a bit connectivity issue, not with phone, within the tws themselves.
4. Touch controls are very sensitive.
Overall, the cons aren't major and can be overlooked. For the price the anc is top notch. Very much recommended.
Now about Umrelo, they are very underrated. Umrelo has such great service. Hopefully they continue to be as humble.