E&Ls are a better OOTB gun, but if you plan on ditching most the guts then there is no negative when compared to an LCT.
Externals (real steel or airsoft) are also much easier to install professionally on the LCTs
The best bit for me about an E&L is the little mag plate in the receiver - makes reloads that bit easier.
Agreed standard mags are not the greatest but can be improved with a little love, NPOs are worth every penny if you’re a serious player.
Yes F2000 / P90 / AUG are the quietest but any AEGs can be built to have a very low sound signature.
Getting rid of the AEG whine / screech / crack / report.
Short cycle duration
All add up to a very hard to ‘find’ gun in the field.
Definitely much easier to achieve a quiet AEG with a V3 gearbox too as the motor is so accurately fixed in position.
Regarding sight mounts I find Red dots / Holo sights are best just behind the rear sight, this type gives the lowest height