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Bright light - nothing beats quartz halogen bulbs. Even in downlights.
As for general lighting don't commit too quickly to fixtures for CFL bulbs - white LED lighting is not far away and its more efficient, as well as much better for the environment.
The price is a bit steep at the moment so its limited to specialised industrial applications - but as the price comes down we'll start to see reasonably attractive domestic versions.
BTW the new A-Set trains for Cityrail will have LED lighting internally - it is already cost competitive on that application based on life-cycle costs for the life of the train.
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