The main decision is less about headline power and more about where the heat actually lands. For a small dining set or balcony table, the best tabletop outdoor heater for patio use is one that suits the space without dominating it. Electric models are usually simpler for quick evening use, while gas options tend to feel warmer and more atmospheric in open areas.
It is also worth checking the practical footprint before anything else. Some tabletop heaters are compact enough for a side table, while others need a sturdier surface and more clearance around them. In UK gardens, wind exposure plays a part too, so a heater that feels strong in a sheltered corner may be far less effective on an open patio.
Portability can mean different things: easy to lift around the garden, simple to pack away, or suitable for trips beyond home. If you only want occasional warmth for outdoor meals, a lighter model with straightforward controls often turns out to be more useful than a bulkier unit with a higher stated output.