The 382 was a fabulous machine for small yards--pretty sure it was hydro and gear drive, your choice. If you were a tall guy, the seat needed to be raise up a bit. At the time that was IH's answer to a dime store Murray.
982 if you have one you probably suffer from Tim Allen syndrome
. Nothing like the sound of that Onan barking.
6 and 782--forerunners of the finest Cadets ever built (1810 and 11), well that's my opinion. Seriously, these 2 could handle the needs of MOST users. Very unusual to find one with the original Series 1 KT-17 Kohler--most of them blew up--tons of info on this, just search online. Don't think you're going to buy one with a thrown rod and fix it for $100.
582--hold out for the diehards that loved the old 3 speed Cub tractor rear end. May have had a single cylinder Kohler, don't remember. Don't confuse this with the harder to find 582 Special.
Hopefully the above is correct, going by memory.
Here are some I have or have had