Decide how much food you make
A six-quart single-basket model can be a reasonable starting point for smaller households. If you routinely prepare different foods at different temperatures simultaneously, you may prefer dual baskets.
Measure both appliance and clearance
Countertop space is not just the footprint of the unit. Check the product manual for ventilation requirements and room for opening or removing the basket.
Ask whether you will wash it often
Read about basket coatings and cleaning requirements. Easy cleanup makes a cooking tool more useful than a long list of modes you rarely touch.
Compare real tasks
Reheating leftovers, cooking frozen foods, and roasting vegetables may matter more to your routine than special presets. Buy around your meals, not a feature-count contest.