i have one. the classic carrier. i like it. no rattles.
just adjust the rubber stop right and you'll be set. it also has a post that slides down into the top (which a lot of people don't even put in) and you may not be able to get it tight enough but a little gorilla glue around the edges fixes that.
Mine is absolutely quiet and the latch has been great so far with plenty of bouncing around and there is no sag. holds my 32" mud terrain/alloy well.