Reputable budget models with tip-over + overheat cutoffs and certification are safe; avoid uncertified no-name units regardless of price.

A 1000-1500W ceramic or small oil-filled radiator with safety cutoffs offers the best value for a room.

Running cost is set by wattage, not price — a $20 and $200 heater at 1500W cost the same per hour; budget just lacks features.

A 1500W unit warms ~150 sq ft; smaller <$30 personals only warm a chair. Match wattage to the space.

Timers, remotes and WiFi are nice but unnecessary; keep the two safety cutoffs and a thermostat — that is where value is.