I may be a newbie on this site, but wisdom comes with age. Several issues are in play when you are looking to purchase anything. First and foremost is need. Do you really need this item, in this case we are discussing lighting and more specifically LED lighting. At the heart of this issue is need, plants need light to grow, so we have established need. Second factor is price. You must temper your "wants" with your "means". Can you afford a GN HS1, or only a Marshydro UFO. You should always determine what is the highest level of features you are willing to pay for. This is the time to educate yourself. Read, read, read. With the internet, you have access to more information than you will ever be able to assimilate. Once you have done your research and determined which features you need in this light to meet your plants needs, now look at the different lights that meet the criteria you have established. It is always prudent and advisable to seek advice when making these determinations, but in the end, the decision is yours alone.
That being said. I followed the course just a few short weeks ago. I decided several things.
1. LED is the wave of the future in grow lights and lighting in general. LED's are more efficient than all other currently available lighting formats.
2. LED technology is advancing and the industry will be in flux for years, but choose wisely and you can ride the advances and benefit along the way.
3. At this point in time, the MarsHydro 96x3 reflector series is a good light for me to get into the LED wave. This light allows me to gain experience with LED's at a price that I found acceptable. As I have already begun to see the results and differences in growth, I am already altering my perceptions of what to expect and what I would like to change for future LED purchases.
4. The GN HS1 appears to be one of those "quantum leap" units. Every industry has them. It is that next step in function, form and efficiency. I will watch Brother TaNg's grows, which are always informative and amazing, to get my first hand experience of what this light can do.
So, to any who are undecided, it's a light, you have to have one to grow plants. If an LED fits your purposes and you can afford it buy one.
Disclaimer: Neither TaNg nor any LED manufacturer paid for my endorsement. The opinions expressed are mine and clearly the ravings of a mad man.