ELS please, because most do not know how to install non-els cars since it is quite difficult, ELS helps us to enjoy cars more easily when installing them, DLS may be better but not simple and that takes away points.
The ELS version uses default lights in addition to ELS, it would therefore also require carcols edits. The installation being difficult was my original reason for not doing hybrid setups, but with LML it's now really easy to install mods. ELS lights simply aren't as customizable, I just can't make it as accurate without non-ELS lights. There will be replace and addon versions set up for LML as well as an addon DLC, this way the installation of either version will be made as easy as possible.