The HAF932 and the Antec 1200 seem to be about the most popular full tower cases on these forums. Both offer great airflow and ventilation and both are pretty big. You shouldn't struggle for room in either of these. Lian Li also have some very nice full tower cases but it really depends on personal preference and how much you are willing to spend.
Antec also has some new cases coming out next month that look awesome.
Not sure what they will retail at but I want a DF-85 ( 1200 upgrade ) !! http://www.overclockersclub.com/reviews/ces2010/17.htm