The right choice comes down to a few practical points: how much space you have, whether you want a set mainly for lounging or dining, and which materials will be easiest to live with through wet, changeable UK weather. In most cases, powder-coated aluminium and quality PE rattan are the safest bets for low-fuss durability, while cushion design, overall footprint and day-to-day comfort tend to make the biggest difference once the set is in use.
Focus on the balance between size, seating style, maintenance and value and it becomes much easier to narrow the field with confidence. A compact set can make a small patio feel well used rather than cramped, a larger dining layout suits regular entertaining, and a well-priced weather-resistant option can still be a smart long-term buy if the build and finish are right.