hmm interesting, im lookin ' buying rollers this week, was going to get the aluminium ones by cycleops, BUT gravity slaves recomm ' planet X look tempting, worth a buy GS ?????
I have the cycleops aluminium rollers and I am very pleased with them. You can also retro fit a resistance unit to it.
I also have a cycleops fluid trainer that still rides like new even though it is 10 years old.