I have a mid 80's Unisaw, but with a Unifence. I've owned 5 saws in my woodworking lifetime and was always wishing that I had a better saw, so was always looking to upgrade to something better. Since getting my Unisaw with 52" Unifence about 16 years ago, I am no longer seeking a better saw. I bought it used from another woodworker hobbyist, cleaned it up and put new belts on it and then began using it. Since then I have added a Wixey DRO to the fence. I couldn't want a more accurate or reliable table saw than this. I bought the Uni-T-Fence extrusion options from Peachtree Woodworking for it, so I now have a fence that has T slots for adding options like feather boards, etc, but kept the Unifence extrusion and switch fences when I want a low fence etc. I also bought the 16" length of Uni-T-Fence, so I can have a short fence when the need arises. My son will inherit this saw and it will likely be his saw until he passes. I was a little uncertain about the Unifence at first, but once I learned it's versatility, I have fallen in love with it.
I have no need or desire for a better saw than my Unisaw, if one really even exists. It's been one of the best woodshop investments that I've made my past 65 years of woodworking.
Charley