something's wrong with them otherwise they wouldn't be so rattling 
So you know how the novatouch has those supports for the stabilizer stems on a cherry keycap? The topre doesn't. This means the topre stabilizer does almost nothing. Why does it rattle less? the torsion spring (stabilizer wire) doesn't bend very much. This explains why it's quiet. The novatouch torsion spring actually does work, as the keycap supports are further away from the center, this allows them to distribute the torsion of an eccentrically loaded keycap and distribute it better. What makes the rattle? as the torsion spring bends one side will be contacting both "sides" of the channel it sits in. In lower amounts of torsion and in just tapping it you get rattle as the spring rattles back and forth in its channel.
If you like I can measure them both but the size of the channel and the width of the torsion pring is the same for btoh the novatouch and the realforce.
Oh, the holes under it are to get a good spread of plastic through the mould and keep it from sagging in the wrong place as it cools (and going out of spec). That's why the novatouch has 4 and the topre has 2, to account for the different stem design.
My idea to help with stab rattle is to:
1. grease the stabilizers
2. if that doesn't work, put some plastic around them to make them wider
About cases: the realforce case is PBT I think. It's moulded extremely expensively (make sense 'cause it's made in japan so it's gonna be expensive anyway) The novatouch has a case made of a different material (pc&abs I think? will have to check) and shows some streaks from teh plastic entering the mould at different rates. It would likely have been cheaper to make but it is a lot nicer and more expensive than most keyboard cases I have seen.
Further info will be in the review when I write it. I just wanted to reply directly to your comments.
