to be fair, the 300 2.8 vrii is no slouch
Agreed absolutely, i remember the day i bought it,........... i was at Nikon and they brought out the 600 300 200 and the 200-400 and with my D3X i spend a couple of hours A B testing on a telegraph pole and bush across the street.
For me the score card went like this,
The 600 at F4 does basically what the 300 does at F2.8 only at 600mm, the 200 F2 was special and excellent, image quality was very similar if you looked hard it may have been so fractionally sharper zoomed in 200%, but in the lower light shots especially in the shadowed darker areas i didn't need as much ISO compared to the other lenses.
The 200-400 was very nice it took excellent images, really its a great lens, but something just didn't gel...........it didn't have the magic i was looking for.
So the limitations of the 200mm weighed on my mind for what i needed, yes its F2 but it was for what i was doing just a whisker to short, the 600 F4 was excellent and loved it but again limited to 600mm so to say, the compromise was the 300 F2.8 VR II and adding a 1.4 TC, at the time i was using the worlds best high res DSLR the D3X LOL.
From the history as i was told the 300 2.8 was the lens that Nikon developed much of its optical formula on for many lenses and many decades.
Also i was told the 85mm 1.4 was also a key lens for developing lens formulas ? as well as setting production quality control standards.
Bottom line, today there are some spectacular new generation Z or S lenses arriving.........along with equally spectacular prices.........
I wont buy the new super expensive exotics.
The 300 2.8 VR II is for me a stunning lens and fits my current needs, its a lens i shoot 98% of the time at F2.8 or on occasions F4.
I think the lens will still deliver excellent results with the Z8 should it be a 60 plus mp camera equally as it does on the D850 or Z9.
I now rent or borrow the FX 600 F4 only when needed, i use the 300 2.8 VR II where i can, my go to work horse is the stunning 70-200 fl, in general good light the excellent 200-500, and below 70mm where possible its always the 50mm 1.8 S or the very purposeful reliable 24-70 2.8 G, yes i know the newer generation lens line is supposed to be better but nearly AUD $4K for a 24-70 F 2.8 S to view images on Instagram, Face book or a web site..........the current Tamron 24-70 with VR is well not that far behind if at all or different at around 1/3rd the price and seems to have better VR than any Nikon equivilant especially in the 70-200 area..
65% of the global web activity is on a mobile phone or mobile device like an I pad.
I prefer to invest more in my skill sets or how i do things .......and get smarter and closer.
Only an opinion