Looking for some insight here. I know "use simcraft to figure it out" is a general answer but I don't feel confident that I can set things up right to get a correct answer from that.
I currently have Heroic AoC and Heroic Haromm's and because of that I've been playing SV 99% of the time. I'm wondering if a flex/lfr TED would be better for BM (since I haven't gotten a normal one and we're doing H Siegecrafter progression now) or should I just stick with the two that I have and go BM anyway?
Difference between an equal iLvl Haromm and TED is within margin of error in reality.
In my gear(577, no HC-WF wep, HC-WF AoC, HC HT), a HC TED only gives around 850 more DPS according to FD. Stick to whatever is higher iLvl and you should be fine.