The NLs will look brighter as they have a wider field of view allowing more light in, but they actually have the same glass as the ELs. the EL Range TA i felt like is the same as the previous model EL Range. in my experience, any rangefinding binocular when compared to the equivalent model, without rangefinder, will look "darker" so to speak. ive seen it with zeiss swaro leica vortex and so on. i feel that swaro is brighter for my eyes though so i like to use their glass.
it all comes down to preference. you want a combination bino to consolidate. or do you not mind having different items.