First tank

[GongShow]

Question im starting my first reef tank soon and i have been reading alot and duing reserch online and have come to the point where i think im ready to start buying equipment. I have about 5 hundred to spend on a tank and I have narrowed my choices down to a 30 gallon glass tank with average parts and lighting on it or a 29 gallon biocube. I was wondering if you guys could give me help on which would be a better system for me