A website touting the Sylvania SilverStar headlight bulb says it provides "up to 30 ... "compared with worn standard halogen" bulbs. Still, such claims are making premium-priced halogen bulbs ...

Those with 2700 K are closest to incandescent bulbs; ones with 3000 K are similar to halogen bulbs. The averaged measured color rendering of ten bulb samples ... The Sylvania Ultra-LED 100W ...