Welcome to 50+ and BF, first off, hope you like the gang here. Billydonn has a lot of trainer experience from the winter months, he does a regular group spin with some local guys on them in the dark and stormy cold times. I believe they all are on "turbo" trainers and not rollers. I am currently looking at a Trainer from Bike Nashbar, had rollers in the late 70's and enjoyed them a lot. Takes a few times to get used to the balance required but they can give you a work out. The turbo style are usually fluid or magnetic resistance types, not sure which is better so I will follow your thread with interest. Several members use them and will relpy here.
Bill
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Semper Fi, USMC, 1975-1977
I Can Do All Things Through Him, Who Gives Me Strength. Philippians 4:13