The NZXT Lexa cases have a door on the front bezel which restricts air intake.
The Thermaltake Sword M appears to have better ventilation, airflow and cooling. However, it is a huge oversized full tower case with lots of unnecessary gimmickry. Have you checked the specifications? The bloody beast is 30 inches in length from front to back. I think that's the longest cases I've ever seen. I wonder if it qualifies for the Guiness Book of World Records!
In this situation I would say it is definitely a matter of personal preference.