Check the basket, not just the litres
Lay out the portions you normally cook. Separate drawers help when two foods need different settings, but each drawer has less usable width than one large basket. Leave the ventilation space in the manual, including room to pull out the drawers. Presets are starting points; they are not a cooking-quality score.
A smaller machine may suit frequent small batches. A larger one can avoid repeated batches when everyone eats together. Rated watts alone do not tell you the electricity cost of a meal: time, temperature and the food all matter. Compare the exact UK model and the accessories included, rather than assuming similar names mean the same machine.