Well there is a couple of options you have in this particular Case. First off DO NOT get anything Razor from my experience they suck. But i am wondering why your case is vibrating so much? Check your hardrives, case fans and PSU to see what is the culpret here for it would be cheaper to fix a broken fan or hardrive than to buy a whole new case.
I recently installed DYNOMAT in my brothers case to stop some noise but it also stops vibration. This stuff does wonders for computer cases it looks cool keeps noise levels and vibration down and its easy to install. Your best bet it to order some online it will be cheaper than at your local electronics store. And all you need to install is a good pair of scizzors or a sharp blade and a blowdrier.
You could get the New LanBoy Air case wich uses Air mounts for hardrives, They mound using big rubber band looking clips wich counter the vibrations. Also has great airflow and custome setups for you to choose.
Get fan dampeners, psu dampeners, You can buy the rubber pluggs that hold your case fans in, instead if the screws. this stops vibration also.
I hope some of my idea's help keep us posted on what you decided on!