Nespresso Aeroccino 4 vs Nespresso Aeroccino XL

Buy the Aeroccino XL if you want more capacity and fewer reported breakdowns. The Aeroccino 4 is the smaller, quieter unit with two temperature settings, but owners report it stops frothing or flashes red within months. The XL holds roughly twice the foam and nearly twice the hot milk, and its one-button cycle covers hot foam, cold foam and warm milk. Both are plastic-bodied automatic frothers with dishwasher-safe parts; the XL is the safer pick for most kitchens.

• Choose the Aeroccino 4 if you make one or two small drinks at a time and want the quieter, more compact unit with two temperature settings.
• Choose the Aeroccino XL if you regularly froth for two or more cups and want the larger capacity and the simpler one-button cycle.