hello i have the boicube 8g and like it quite a bit(i wish i would have gotten the 14g though
) witch ever tank you get you will need to mod it some, for my biocube i took out the bioballs and filter cartrige(bad for SW tanks)i then used a razor and cut off some of the black paint on the back so i could put a light on it and keep macro algea in the second chamber with some LR rubbel, you will also need to repace the pump that comes with any of those tank sence it wont be enough flow realy for SW tanks(iam replaceing mine with a maxie jet 600 i think)or add another powerhead if you want, on the aquapod i heard that they can get quite hot and that fans arent that good plus they have only a small opening on the top so you will have to open the entire lid to work on the tank witch can be annoying for you and corals, i think the JBJ nanocube is pretty mutch the same as the BC 14g but i think the lights cords are all one so you cant put them on diffrent timers but i could be wrong, also there was an issue with the nano cubes cracking!!.
personaly for the 200$ i would get the biocube 14 and do some mods too it and get the extra water volume but thats just me
a good place to look for info is nano-reef.com