Quote »I like my cars to stay reasonably flat in turns, to be neutral lending to slight understeer, and be able to take Downtown D.C. roads without a flinch. I think the KYB AGX's would be good, but what springs and shocks do everyone recommend? [/quote]
'Reasonably flat in turns' and 'downtown DC roads without a flinch' should not be used in the same sentence

I had to drive my 240 to work a few times last year (way up on Conn. Ave) while my other car was in the shop, and it just happened to be shortly after I had installed the Ground Control racing setup - 450/325 ERS springs, Koni sports, GC camber plates, Whiteline poly bushings... talk about fun :rolleyes
I would suggest the AGX's, as the Koni's are not adjustable for rebound and are a little on the stiff side. At least with the AGX's you have the option of changing the ride stiffness. The down side is, when they wear out you throw them away, while the Koni's can be rebuilt/revalved. If the car is a daily driver though, I wouldn't expect that to happen for quite a while.
As an aside, there's this curve coming off the Memorial Bridge into VA - it's the second left after you come off the bridge... if you can catch it with no traffic around...
Have funEarl