Isn't the smaller magazine in HoC more than compensated by the tracking, extra damage to hive majors, and clusters? Plus, to me, at this point it seems like its greatest value will be its ability to let me use an exotic slot elsewhere -- like on Icebreaker, which is definitely useful at least on Deathsinger, among the spawn points mentioned in the OP. Again, this is a sincere question as I haven't had a chance to really use it yet, as I only just received it. I do see how DB might be preferable on the lamp run, for the reasons mentioned in the OP.