Ardec Uno vs Duo — which one to buy
ComparisonsThe same machine with one more boiler. Whether that is worth it depends on your mornings.

The short answer
If you make one or two milk drinks a day, the Uno. If you make several in a row, the Duo. Flavour is not the deciding factor — the group and pump are shared.
Where they differ
The Uno wins on warm-up and loses badly the moment you queue drinks.
Cost of the upgrade
| Uno | Duo | |
|---|---|---|
| Boilers | 1 | 2 |
| Warm-up | 6 min | 11 min |
| Steam while brewing | No | Yes |
| Bench depth | 33 cm | 38 cm |
Verdict
Buy the Uno and put the difference into a better grinder. That is the upgrade you will taste.