I know the 830 has 3-5 1/4 ext, 2-3 1/2 ext, 3-3 1/2 int. Not sure about the 1030. Antec has a new case coming out, the sx630. It has the same number of bays but is about 3 inches shorter and has 2 less fans.
I really like my 830. Lotsa room and good cooling.