My favorite coasters from the 80s that I've been on:
1. Bandit (I love the last two sections through the valley and whizzing next to the trees. It would be even better with no OTSR's, but it's quite smooth for a Togo. It's especially cool to ride in the winter at night when the whole park and coaster is lit up with tens of thousands of decorative lights)
2. Mindbender at Galaxyland (especially in the back car when they have it facing backwards)
3. Ultra Twister (the only one with a dive loop / Split S at Rusutsu resort)
4. Ultra Twister (the standard model with the mid-course brake)
5. The Demon (at California Great America. One of my first coasters ever)
Although I'm only in my early thirties, I feel like I've been on more coasters from the 80s than coasters from the 2010's... there just aren't many new coasters around where I live.