I have come across two ranges from Philips for their LED bulb ranges, there is the 'Essential' range, which is the budget value range, & then there is the normal 'Philips' LED bulbs range. The price difference between the two is substantial (upto 50% price difference) & in some cases, the 'Essential' range is more efficient, having a higher lumens/ watt. I have been purchasing the 'Essential' range so far.
So, I wonder what is the difference between the two ranges? After reading about CRI from my question here, I am wondering whether the difference between the two is in light quality (CRI) and / or other non-obvious variables.