Personally i had some bad experience with Mars Hydro, both with their product and customer service so i wouldn't recommend it.
If you search around you'll see plenty of negative comments and reviews about Mars Hydro regarding their quality. Most of the good reviews come from sponsors, or people who got a free light and are obliged to give a good review. Or people who just bought the light, vegged a plant for 1 month and they were so excited and happy they gave a good review. But what about 1, 2 or 3 years later? Very few legit positive reviews, they must be very lucky to have a good experience with Mars Hydro even after few years.
They are really good at marketing, that's where most of their investment goes, not into quality..
And their so called ''5 year warranty'' is basically a clickbait, you only get 1 year free warranty, the rest you have to pay for shipping BOTH WAYS, repairs, parts etc.. And it's highly possible they will try to avoid honoring their warranty, or sending wrong parts, or you just might wait for few months until they send the light back to China for repairs. Overall a bad company with bad customer service and a 50-50% chance of getting a good product, it's a gamble..
If you are going for cheaper lights i'd rather pick Spider Farmer, Maxisun, Bestva, Viparspectra.. Although they are in the same range as Mars, they aren't as risky and they are slightly better.
But i would highly recommend MIGRO, i own his light and it's awesome. Only 300€ just within your budget. Both the light fixture and the driver run extremely cool, it's high efficiency and high quality, 3 years full warranty.. Customer service is excellent as well.
You can order 1 short and 1 long bracket so you can adjust the distance between the light bars as needed. You get 2 fixtures for 2x4 tent so you can hang one fixture lower and the other higher in case you grow 2 strains at once. Distance from canopy is only around 10 inches, it's short on purpose to have an even spread, and it also helps with height.
Now he made some upgrades, i have the older model so i can't wait to try the newer one. Strangely it's a very underrated light even though Migro is popular and many people trust his videos. And don't get mislead by the wattage thinking Mars 300W is better than Migro 250W. His lights are more efficient so they don't need 300W, and Mars lights barely pull the correct wattage anyway, most people get around 280 real wattage.
Amazon:
Official website:
The MIGRO ARAY 4 is a 250W LED grow light with 4 LED bars, a single driver with dimmer control and a 3.5m (12ft) long cable. Suitable for flowering a 1.2m x 0.9m or 4ft x 2ft grow space Maximise your yield with a high efficiency, full spectrum & commercial grade LED Grow Light designed by Shane.
migrolight.com