I'd also take a look at there specs again mate,90w is pretty low,and like muddy says is this a true 90w or does it run at 60/70w? Also with there 140 degree beam the core penetration my not be as good as say with a 60/90 or 120 degree..Which is what alot of other companies use.maybe there 5w LEDs are a factor,a more direct light may bleach or be to strong hence the wider spread