
Roborock
Qrevo S
Reliable, great mopping (lifts pads), but poor cable avoidance.

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I bought one of those ~2 months ago and it’s been great so far. I have cats so my tip for you is to clean under the robot after the first few times you run it to see how much fur/hair got stuck under it. I have a pretty big place, so I clean after every run. Other than that, be careful not to vacuum over wet spots, mine tried to vacuum in a place that I had spilled the cats water and it ended up ruining the trash bag, it’s super inexpensive and easy to change. You should probably buy a few spare trash bags and other parts, you can find some kits online for sale
The Xiaomi X20 Pro is the same price and will do much better since it has a lidar tower for better navigation and can dry mops with warm air to prevent mildew, which I recommend for damp climates like the UK.
Xiaomi X20 pro new for 1400 works perfect
This was a nice purchase for me. I also got it for sale. Tech is nice hardware is nice. Sensors does it's job - always checks the corners. Vacuum could have been a bit more stronger for the carpets. The new version has hair tangle remover, this doesn't. That's a good add to have in the latest model. 1 year now, keeping the house tidy - I only hard clean my place one a week every other day the robo vac does it.
I just bought the Xiaomi Vacuum X20 PRO and I LOVE IT!!! The price is about 300-350 usd
X20+ is missing hot drying with makes a difference imo, check Xiaomi X20 pro or Max both in your price range(check Xiaomi official store), seems like Curv S5X is around 520 on PcComponentes too, it's above your 450 euros top but might be well worth it in the long run.

Roborock
Qrevo S
Reliable, great mopping (lifts pads), but poor cable avoidance.

Roborock
Saros 10 Series
Slim, quiet, excellent avoidance, but weak on carpet.

Dreame
L40S Ultra
Superior avoidance, great for pet hair, but poor on carpets.

MOVA
P10 Pro Ultra
Budget king, smart avoidance, but struggles on patterned carpets.

Roborock
Qrevo Curv Series
Great for pet hair; handles high thresholds, but poor avoidance.

Ranked #1
Dreame - X50 Ultra

Ranked #1
Roborock - Saros 10 Series

Ranked #1
Roborock - Qrevo Curv 2 Flow

Ranked #1
Roborock - Saros 10 Series

Ranked #1
Dreame - X50 Ultra

Ranked #1
Dreame - L40S Ultra