The problem with cheap cases does tend to be airflow and locations for fans... but also the build quality of the case. Things like ports for routing cables wit

The problem with cheap cases does tend to be airflow and locations for fans... but also the build quality of the case. Things like ports for routing cables without causing a rat's nest... cheap stamped sheet metal with sharp edges to cut yourself on, decent I/O backplate, temperature control zones, bottom mounted PSU, etc. A good quality case will cost you... but you can likely get several builds out of it over the years... so well worth it.