9% cheaper ≈ US$200
- Base station Auto-empty dock vs Charging dock
- Height 73 mm vs 99 mm
- Noise level 51 dB vs 65 dB
- Threshold climbing 17 mm vs 20 mm
10 vacuum-only robots at a similar price that compete with the HG410D 011 HG4 — what each does better, what it gives up and how the price compares.