At the moment the ideal LED doesn’t seem to exist, there are solutions though that make the best of them. In the last two years there has been a great interest in COB (Chip -on-board ) and Mid -Power (Middle Power LED) solutions.
COB is a new technology of LED packaging for LED light engines; multi LED chips are packaged together as one lighting module. When it lights up, it looks like a lighting panel. It is simple to assembly and efficient. The price is competitive, but unfortunately it only comes in a circular shape.