The M9 is a mid-size tower that is filled with cooling inspirations. There are four different versions of the M9 which means there may well be one to suit you. There are models with and without the side panel window. And if you are not looking to use some high powered power supply each of the fore mentioned models can be had with 400 watt power supplies. Thermaltake is one company that is known to try and provide products that suit all individuals no matter your budget, taste or needs.