Wingo - I thought you want to review the lamp, but it seems to me that based on your answer it is all about PAR.
I hope you can explain the difference between 40 degree focus lenses used by eco lamp versus 120 degree focus lenses used by Pacific Sun and how they influence PAR results.
As I mentioned earlier - if you want to do full fair review - I am all for it, but if only 1 aspect, Pacific Sun has its PAR numbers on YouTube.
I will review both lamps in the future with more tests and details if and only if I have enough time to play with both. Not sure which company is nice enough to lend them to me for some period of time.
In the mean time, I think the fastest and easiest tests would be PAR at various spots in tank because that the first concern all reefers want to know-what coral can I grow with LED and where should I put my coral within a tank.
Whether lens, reflectors or plain vanila are used has no bearing on the end user's choice because, they should consider the results with respect to the coverage. For example, if a 40 degree lens helps to focus the light to an area but cannot cover a tank of 18" depth, then the PAR numbers will reflect that. On the other hand, a 120 degree LED may provide better coverage but less intensity over a certain area or it may even waste all the light by spilling them outside the tank. Therefore, the most important factor would be, for an end user, is the final PAR numbers at the spot they want to put the coral.
Color is an objective issue even though some spectrum may be more suitable for certain coral, but unless I own a lab or some coral scientists release their data, we never know which is better.
Durability is only good when we run it long enough to tell. Not sure how much time either company can lend the lamp to me.
Craftsmanship, we can tell by examining them ourselves.
Power supply reliability requires long duration test plus opening it up which will void the warranty. Not sure whether all participants want to allow me to void the waranty of their products.
.....
Note: I am not interested in finding which is a better light over all. I am only interested in which light is more suitable for which application. For example, I have a 20G long, 29G, 75G ...., which light has better PAR average and less dead spot for a particular tank dimension.
So when I set up my testing platforms, I will invite you guys.
Hmm, I might as well invite other LED manufacturers to join.