Ti-86

Is the Ti-86 discontinued or something? When I was in high school, we were told to buy that calculator for our math careers, but now I see a bunch of those Ti-84's instead.

Wouldn't a lower model number in this situation dictate some missing features...does anyone understand the difference between the two?

Thanks

They are extremely similar.
They still talk to each other.
What difference does there make if there are a few minor differences?

I own an 86 and love it. I prefer it by far over all other TI models short of the Voyage (even though it uses the 89's terrible OS) and the Nspire. I hate their OSs, but the Voyage's keyboard and the Nspire's grayscale screen are just too good to pass up.