I think the pro-level AF-S Nikkor lenses are worth the additional cost. I have owned two of the 80-200 screwdriver-focusing lenses and also the 70-200 AF-S, the original model. There's nothing faster than a good, pro-level AF-S Nikkor lens when it comes to focusing speed and sureness, especially when you want to shoot action shots. With an AF-D lens, if the lens mis-focuses a bit, you have to disengage the AF system just to touch up the focus...with an AF-S lens, there is full-time manuakl focusing override on all of the "pro-level" AF-S lenses; Nikon's AF-S protocol has two levels; the "pro" AF-S lenses all have the original AF-S system with full time manual focusing override. A small sub-set of Nikkor lenses, like the really cheap, newest kit zooms that call themselves AF-S have an A/M switch and do not offer full-time manual focusing override.
I don't mean to describe the D200 as low-end, but it was the last of the mid-level bodies that had the amateur/pro AF system distinction/differentiation: the D300 in 2007 was the first mid-priced Nikon to offer the top-level AF module (the 51-point AF module also used in the D3 and D700), while the D200 used the simpler, 11-area AF system, and also the D200 and other lower-level Nikons simply do not have the big, beefy AF motors and huge battery capacity of the $5,000 D1-D2-D3 series bodies...
The fastest and easiest way to beef up the AF capability of a lower-end Nikon like a D50,D70,D80,D90,D100,Fuji S2, Fuji S5,D40,D60, is to slap a pro-grade AF-S Nikkor on there. On the Nikon big glass like the 70-200 VR, 200mm f/2, and 300/2.8 AFS-II or newer, the LENS ITSELF has a huge focusing advantage over any of the older AF-D lenses in terms of focusing speed, sureness, and the ability to simply touch up the focus, without the need to press a button and turn a ring, or to flip an A/M switch. The older screwdriver focusing lenses simply do not focus the same way as the new AF-S pro-level lenses; it's possible for those who have only new Nikon lower-level AF-S zooms to be unfamiliar with the full-time manual focusing override design of the older AF-S lenses and the new pro-level AF-S lenses. For a user who has only the 18-55 or the 55-200 kit, they might be unaware of how the older, and pro-level zooms offer FTM and also much faster, surer AF than the low-cost, slower-speed and newest kit zooms with this new cheapened AF-S system that relies on an A/M switch.