Ha interesting that there's been a few mentions of the supercush - I just got a tube of them. They're molded, not machined - so appearance wise they're pretty close to the old indy stock. I also got a pack of the Krux "world's best cushions" and they're machined and appearance-wise are quite close to the new indy albeit in white rather than orange. Since they're both NHS I think it's probably fair to assume they're coming from the same place in China.
Top row left is old Indy stock, right is new Indy stock
Bottom row left is Supercush, right is Krux
The krux feel slightly harder than the rest, which makes sense since they're supposed to be 92a while the rest are 90a - but then again the durometer scales used in skate goods are notoriously imprecise so take this with a grain of salt. The supercush feel almost exactly the same as the old indy stock in my obviously very accurate pinch test. One interesting thing about the Krux that I didn't realize is that they come with new washers and pivot cups. I'm not going to put them in yet for the sake of comparison, but that seems like decent value for $6.
Super cush are underrated. They're awesome. I could never get past the clicking break in period of bones
If you're having clicking or squeaking it's probably from the pivot cups rather than the bushings. A bit of lubricant in the pivot cups usually solves it, but you can also use a bit on the seat of the bushings if you're having really bad Thunder-esque squeaking issues.