I have tracked a stock 84 and currently have a 964 at a couple of events a year. There really is a world of difference between them, I tend to keep my cars stock and try to wring what I can out of them instead of sliding down the slope.
The 964 eats a 993 10 times out of 10 and gives later cars all they can handle including GT3s EXCEPT when the GT3 is driven by someone who knows how to drive it (a rarity) and especially if they take advantage of their brakes. Those things can stop on a dime.
What I like best about the 964 is it is still just a younger brother to all the 911s that went before, feel, cockpit, throttle steer all just vastly improved and it looks like one too. Later cars are only cousins at best and while they do everything better on paper it doesn't seem to translate to much of an advantage at the track.
A great 964 can be had for about 20k which to me is a phenomenal bargain and when I got mine I spent the next few months shaking my head at how good they are, how much of the fun factor they have and how underrated they are by purists: the bumpers, shark fin rockers etc. Don't kid yourself, this to me at least is one of the all time great rides. Great thread on early s board about the 964 being the new R Gruppe car, it is a huge thread but worth the read if you are in the market:
90s R Gruppe 911
