^^^But an A51 will almost assuredly outgrow your panel choice, all the while using less electricity and generating less heat. Dude, if you think the China based panels are using the same grade of diode as A51/ApacheTech you really shouldn't even buy a LED panel yet. Seriously and I'm not trying to piss on your parade. They're not light bulbs. They don't work like light bulbs. They don't create light like light bulbs and they aren't all the same. But having said all that a good grower with an excellent environment can get quite a lot from a budget panel. Have you looked at VIPAR? At least they come out of a decent factory it seems.
And if price is the problem, (as it is with me), go DIY. It's so simple nowadays, it's almost a no brainer.
This is all new technology, so if you want to play, you gotta pay something here. No shortcuts and no discounts. Sorry if that's too harsh for ya but it's just like the computer business in the 80s. Anyone for a 5000.00 dollar 20 meg hard drive?
Best of Luck and Be Safe!