Couple of things to look for in an LED:
1. They advertise that ALL the LEDs on the board are from major manufacturers (Cree, Osram, Phillips lighting)
2. The power consumption is in-line with claimed output power
3. The LEDs are mounted on a heat sink
4. The 'claimed' chip power matches the number/type of LED
For this panel, the LEDs are not a major manufacturer, they are Chinese made LEDs. So they will likely not retain their brightness well.
The power consumption of this panel is 230 watts, but claimed is 450. That's deceptive.
On this panel they claim 3w chips, but the chips shown are 1w
There are 160 LEDs, but only 230 watt consumption. Assuming an 85% ballast efficiency, that means 195 watts of LED power. 195 watts divided by 160 LEDs means 1.2 watts per LED. (see above)
This panel has no heat sink-- the fans just blow down on the aluminum circuit board. So, if a fan fails, so do the LEDs. (fans are cheap, heatsinks relatively expensive)
It's your money, but I wouldn't suggest giving your money to a company that is so obviously deceptive.