Both seem similar? Thermaltake V71 and the Thermaltake MK-I Whats the differences?

[PCBuilderMonster]

Both support many huge fans on top and the front Both similar size, both excel in airflow, both around the same price. Im stuck. Any big differences?

 

[Darkbreeze]

Personal preference. Aesthetics.

 

[Darkbreeze]

One is SLIGHTLY larger, meaning possibly a bit more accommodation for liquid cooler configuration. One of them optionally supports two 120mm fans on top rather than just a 200mm. One also accommodates a 185mm tall cpu cooler while the other only supports a 180mm cooler.