i agree ! BGK are more suited as long as theres plenty of spots to hide !
i have 2 in my 5 by 2 a variety of fish including 2 large polys and an arowana and never had any probs !
bgk would be good but forgo the gar. they are not suited to live with aggressive cichlids. more than likely they will harass it till it runs into the glass so hard it breaks its back and dies.