The last great Soviet Championship took place in 1988, and finished in a tie between Garry Kasparov and Anatoly Karpov. (There was supposed to be a 4-game playoff, but it never happened, and contrary to what is says here Kasparov did want the playoff.)
The tournament was ridiculously strong, featuring a host of other greats including former world champion Vasily Smyslov, former FIDE world champion Alexander Khalifman, Artur Yusupov (three times a semi-finalist in the Candidates matches), Valery Salov (once rated #3 in the world), Vassily Ivanchuk (one of the greatest contemporary players never to become world champion), two-time Candidate Leonid Yudasin, 1987 Candidates finalist Andrei Sokolov, multiple-time Candidate and former 2700 Alexander Beliavsky, former top-5 player Jaan Ehlvest, former Candidate Rafael Vaganian, former 2700 player Ilia Smirin, and former Candidate Mikhail Gurevich. Of course not all of the players were at their peak then, but they were still (or already) very strong, and the two super-Ks had to play very well to share first.
Anyhow, for those of you who like old footage, here's an (almost) 15-minute clip with footage from the event, showing plenty of scenes from the playing hall followed by and commentator GM Sergey Makarichev's presentation of Kasparov's famous win from that event against Ivanchuk.
HT: Les Kistler