What is in now, cobs or strips?

I want to build a custom light for a 3x4 space and I am not sure what to use. I am familiar with cobs and I think I am going to go that route. Is there a better route? I have a $900 budget.

I always prefer my corn on the cob. Strips of corn dont seem right

Chips you can replace. If an led goes out on a board, strip. It takes a soldering gun to replace it. That's if you can find parts..Or throw it away.

I've cooked a Cob chip. Dead leds in the center expanding out. $18. 5 minutes job.

Okay...thanks guys I guess? haha.

What do you think about 3' x 4' space. I am thinking 8 cxb3490s 36v split into 2 rails with hlg240h-c1400b on each rail. That gives me 403 watts.