Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Best in some respects

This is the best longwave UV flashlight I have ever used in terms of light quality, i.e. it has very little visible purple light. It also seems to be built as sturdy as any flashlight could be. On the other hand, it is only about half as bright (in UV) as my no-brand Chinese 21-LED UV light that (1) cost about half as much (2) uses cheaper AAA batteries and (3) unfortunately puts out a lot of visible purple light. The light from the Inova is also less focused than most other UV flashlights--could be considered either better or worse depending on your needs.