Yes, the Esci M60A1, M60A1 Blazer and M60A3TTS were superior to the Tamiya old M60A1, M60A3 and USMC M60A1. The tracks were correct (although late style), detail was crisper and the vehicle sat at the proper height.
These three kits are currently in the Italeri (#6391 Blazer, #6397 M60A1) and Revell of Germany (#03057 M60A3) boxes.
There are a couple of problems with the ex-Esci kits. They only build into one variant, whereas the Tamiya M60A3 and USMC M60A1build into two variants. They do not include the earlier style M48/M60 tracks. The road wheels only represent the early finned aluminum style and not the smooth steel type found on later vehicles.
But to be fair, only the Tamiya USMC M60A1 comes with smooth steel road wheels and the Esci link and length tracks are still superior to the inaccurate Tamiya tracks. Only the Tamiya USMC M60A1 can be built into a late Desert Storm era vehicle though.
Having said all that, the Tamiya kits are not bad, just not as good as the ex-Esci kits.