i gotta say....i give it 1000000000 thumbs up!!!...i went from 250 watt AB 13k bulbs which i thought were good, but yellow looking..the AB bulbs were alot better then the coral life stock bulbs i must say...now i got the giesmann megachrome 14.5k coral bulbs...and holy cow...they are insane...Super super white is all i can say with just enough blue that the colors pop but dont get washed out like other bulbs...my dad has an xm 250 watt 14k bulb and its super blue, way too blue for my taste...anyway if anyone wants a bulb that in my opinion is as white as it can be without being blue get the giesmanns 14.5 k bulbs...WOW..sorry im rambling but i haven't been this happy about a buy in a long time..