After seeing how excited Tom is over the 540 I decided to retire my circa 2010 CM 690 II Advanced in hopes of building an epic rig in the 540. I do love the cube form factor and how neat the main chamber is. When I first took it out of the box I noticed the build quality is far inferior to the 690 with very thin sheet metal. I generally treat my cases gently so I was no too worried. As I began the build I immediately broke the tab on one of the hot swap drive sleds. I am not the hulk and didn't squeeze it that hard yet it snapped like a twig. I read on another forum a user having the same issue yet he snapped both tabs off. For being intended to hot swap this is poor design or poor materials or both. Some crazy glue had me back in business and the drives are my permanent ones so I won't be swapping them. The killer for me is the design of the optical bays. I have the Monsoon MMRS II dual bay reservoir for my D5 pump and I absolutely love it. I confirmed with the manufacturer that it can be run vertically and I expected the look to be fantastic. Unfortunately, Corsair chose to use very thick metal supports to divide the 2 bays and the res cannot fit into the bays. The CM case has them too but they are much more narrow and the res is notched to account for these sorts of supports but not for the width that corsair used.... why Corsair...WHY???!!!! I am thus far finding more frustration than enjoyment with my new toy. Any words of wisdom? Thanks