My daily driver that I use for gaming, streaming, design, etc. It has slowly evolved through the years since I first built it in 2009 (hence the SSDs through the ages and the DVD drive). The current case is a black Corsair Air 540 in an effort to reduce the foot print of the PC. The last case was a spacious but cumbersome and hard to work with Silverstone Raven RV-02 and while I loved the thermals and the rotated motherboard layout, living in an apartment means size is a factor.
As far as builds go this went pretty well; the hot swappable 2.5 and 3.5 inch drives are awesome and there is enough room in between the PSU and the front of the case but behind the motherboard tray to put excess wiring to keep things tidy. Honestly no real downsides; as long as you know how big everything is you should have no problems building in it. The only negative is that there is a space on the bottom where the 3.5" HDDs sits that dust comes through; no screen and no real easy way to "seal".
Currently there are two 120mm intake fans, one 120mm exhaust fan in the back, and the Corsair 280mm AIO radiator, with its stock fans, mounted to the top pushing air out. Temps are solid even with the 8700K overclocked to 5.0GHz, but I'm considering buying some Noctua fans to replace the Corsair ones that I'm currently using throughout the case.