We tested the low-beam performance of single-filament (9003) and dual-filament (H7) bulbs from GE, Hella, Philips, and Sylvania ... by the bulb. We also found little difference in light output ...

The averaged measured color rendering of ten bulb samples. Those closer to 100 will better enable colors to appear the same as if viewed under the light of ... The Sylvania Ultra-LED 100W LED20A21 ...

Both of these bulb types lose light output over time ... When you want a simple replacement halogen, familiar brands like Sylvania and Phillips are sitting on the shelf. When it comes to LED ...