Short answer: choose a plunge pool for compact relaxation and lower space impact; choose a full-size pool for swimming, family activity and a larger visual statement.
Plunge pool advantages
- Better for small yards and courtyards.
- Leaves more room for alfresco, lawn and landscaping.
- Can feel premium when detailed with good paving and planting.
Full-size pool advantages
- Better for families, games and swimming.
- More flexible for pool and spa combinations.
- Can become the main backyard feature.