> You want heft? You need to get a Nikon pro body dSLR. A pro body will definitely help you balance your heavier Nikkors. <
My first professional Nikon was an F3HP with an MD-4 motordrive and a MK-1 firing-rate converter for the vertical shutter release. Paired with a 135mm/f2.0 MF lens, that was heft! (Using that combination would strengthen my tricep and bicep muscles.) Prior to that, I'd use a friend's F2SB with the MD-2 motordrive - the one with the 10- or 12-battery pack - and the auto-exposure attachment, sometimes paired with a 300mm/f2.8 telephoto - that was a workout.
My goal is a pro body DSLR. Maybe I'm ancient, but I still equate weight and heft with build-quality, reliability, and longevity. When I asked the counter-person about the reliability of the Nikormat FT-2, my very first Nikon product, that I wanted to buy, his answer was, "Use this camera to drive the tent pegs and to then photograph the camp site."