Load rating comes first
Use only within the manufacturer's stated electrical ratings and appliance restrictions.
Physical fit matters
Large plugs can block adjacent outlets.
Energy monitoring is optional
Some models report power use; others only switch power.
Not every appliance should be automated by cutting power
Follow the appliance manufacturer's instructions and do not use smart plugs as improvised safety controls.
Keep in mind. Do not use smart plugs with equipment the manufacturer says must not be switched this way, and never exceed the product's electrical rating.