I prefer a more solid camera - the inherent inertia with movement implies steadier hand-holding , to me at least. And I've never found my anu of my Nikon, F,F2,F3, F4, or curerent D300S too heavy.
Mind you, I don't generally hand-hold with my manual-focusTokina 300 f2.8 (especially with 1.4 AF Teleconverter)
And yes, I still have them all (too much GAS, not enough GSS).
geoff
PS Nikon TC-14E is modifified by a dude on Ebay to work with DSLRs. And it does !