Here is our system completely assembled. As you can see there is plenty of room to go around here even with many many extra cables from the Antec PSU.

Here we see the power supply fits in at the bottom which is almost standard these days in high-end cases. This can at times make some power supplies difficult to reach all the power cables they need to but with our Antec 850W we had no problem.

And now with the PSU in which was a breeze to install, just four quick screws and you're good to go.

Here we see a few more vents and also another fan on the inside of the case this time, this is a large 125x125x20mm fan to exhaust heat.

Same area with the system installed.

Installing expansion cards is very easy and again tool less. Just pull out the plastic clip and put it back and it fits easily in.

5.25" bays are easy, simply unlock the clip and it comes out of the case, put in the drive and put the clip in aligned with the screws and lock it back. Somewhat similar to Coolermaster's solutions.

The same method is used for the hard drive cage. Unfortunately it isn't removable and also there is only the one lock on one side. We're okay with this for DVD burners but for hard drives we'd like to have locks on both sides to make sure the drive is completely secure.