"Whitest" looking 10k 150 watt DE HQI MH

Title says it all. I saw Roberts 400 Watt SE Ushio 10k bulbs and really liked that look, but I'm wondering if it will be the same for a 150 watt DE HQI bulb. Which is the whitest looking bulb for a 150 watt DE HQI fixture
 
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