Which capsules actually fit?
Check the precise capsule family used by the machine. One brand can sell several systems that are not interchangeable. Similar shape or naming is not a dependable compatibility check. Find confirmation from the machine manufacturer and on the packaging of the capsules you intend to buy.
Next consider the drinks you normally make. Are compatible capsules readily available in formats and flavours you want? A huge selection on one website says little if you only use a few varieties. Compare per-capsule prices using equivalent pack sizes, and do not treat a temporary introductory discount as the permanent running cost of the system.
One button is not the entire process
Look at capsule loading and removal. Some machines collect used capsules while others require immediate removal. Check that the collection compartment can open in the proposed location. A small container may need frequent emptying when several people make drinks consecutively, even if brewing itself is straightforward.
Measure clearance beneath the outlet using your own mug or cup. An adjustable drip tray helps only if the vessel then stands securely and drips are collected. Inspect the water reservoir too. A tank that lifts out from the rear may be awkward under an overhead cupboard despite the machine's apparently compact external measurements.
Ongoing cost and waste
A capsule system involves repeated purchases. Use your normal weekly drink count to compare options. Include milk capsules or other components if the chosen drink requires more than one item. This avoids a comparison in which one option includes the whole drink while another counts only the coffee portion.
Investigate how used capsules can be handled locally and what conditions any collection scheme imposes. Material type or a recycling symbol does not mean every municipal waste stream accepts the capsule. Also check cleaning and descaling instructions. A suitable system lets you organise supplies, used capsules and maintenance comfortably, rather than merely offering an inexpensive machine on the first day.
