Which model is best for me

I have the Aqua ultra track, but it is struggling in some corners and hates narrow spaces next to wc and entrance matt, although both are wide enough for it.

I can get another model for ground floor if there is a better one for corners?

Hello, thank you for contacting Dreame.
Regarding your device's inability to clean corners, you can troubleshoot using the following steps:
1. Wipe the edge sensor on the right side of the robot with a soft, dry cloth. Ensure the edge sensor is not obstructed by any obstacles. Then try cleaning the edges normally.
2. Please confirm that you have completed the robot's network pairing. If not, please complete pairing via the Dreame App and then enable the bionic edge cleaning function in the default smart mode.
3. If not completed, the bionic edge cleaning function requires connection to the App and activation of the corresponding function switch to function. We recommend that you complete pairing first.

If completed:
① Please check if the bionic edge cleaning function is enabled in the settings.
② We recommend that you check if the selected mode is Smart/Daily/High-Frequency mode. Each mode has a different oscillation frequency; you can choose the appropriate oscillation frequency according to your cleaning needs.
If the problem persists, please feel free to contact us again. Thank you for your understanding.

sometimes remapping the room or adjusting the obstacle settings in the app can help a bit, but if you are mainly looking for better corner cleaning downstairs then a different model might actually do a better job for those awkward areas like the x50