Stability in the chassis is very good. I removed many components trying out various mounting positions for the hard drives, and just to see if once all you had was the shell left, can the chassis still stand on its own. What I found is that it is in fact very solid in its construction. I do believe the compact nature of this specific case helps, but none the less, the PC-Q27 B is solid as a rock and vibration free when in use. There can be hard drives almost anywhere you could think to put them, you have room for an ODD, and with it being fan less, this is also a perfect solution for those looking for something for their HTPC. Inside and out, no matter what part of the chassis, I like what I see.
There are a few sticking points to consider when you plan on building a system inside of this chassis. For starters, look at the power supply. If you plan to go big, also plan big. By this I mean think it out, and be sure to go modular when you buy it. If you have dreams of a monster video card, you may have to reconsider to something like a GTX 660 or similar since most more powerful solutions won't come in a single slot offering even though there is room for more GPU power in here. The last bit of advice is about the CPU cooling. You can fit a stock Intel cooler in here, but you need to remove the fan, or figure a way to reverse it. You do have some aftermarket options as well, but buy the shortest thing you can find, if the stock solution isn't good enough for your needs.
I still think that for the price of $74.99 at most locations, you still are getting quite a bit for your money. Obviously aluminum is more expansive to build with than steel, so that will drive the price up. Then there is the fact that you get a chassis assembled with screws. This takes more time to assemble, which costs more, even if it is better for you in the end, to Lian Li it is worth the little bit extra for their customers. Considering the overall size of the chassis, if done right and thought out very well, you could build a pretty serious gaming system in here. It may not run at maximum settings, but then again, it is sleek, sexy and silent.
This is why I think the PC-Q27 B is not only a great chassis, but a look at where Lian Li is going, and I have to say the future looks bright.