The MF3RS2 spring noise is irritating, but it's due to the fact that the puzzle comes with washers. It's the sound of metal on metal so at least you get the piece of mind of knowing that you're not damaging the puzzle's plastic with every turn as the springs drill down into the core.
The RS3 has that annoying 'whissshhhh...' sound though, unless you lube it silly. It's like a Valk Power M but much louder...