Chambered alder with an all maple modern neck. Guitar weighs 6.38 lbs after I installed the Clapton circuit and fishman battery backplate. It was 6lbs before that.
It never had neck issues.
It's all about the upper horn/strap location. 12th fret vs 15th like a tele. Tla strat should never have a dive issue due to that, unless you choose a heavy wood like purple heart, go baritone, or have some heavy assed tuners.
Yamaha's 2nd generation revstars had the upper horn lengthened for this reason