What is more efficient - Liquid XP from OpenBlocks or Mob Essence from MFR?

I built two types of mob traps. One MFR based: mob spawners(from vanilla minecraft) + grinder.

As you can see there is tesseract which transfers mob drops and MobEssence to Auto-Enachnter (MFR) and Auto-Anvil (MFR) which do the work.

The second one is OpenBlocks/ThermalExpansion based. Couple of Autonomous Activators filled with swords (possibly made of Tungstensteel which have durability about 5000 and enchanted on durability and looting) which will attack nearby mobs, and a Vacuum Hopper (OpenBlocks) to suck dropped items and, the most important - experience orbs. After - transfer it to Auto Enchantment Table (OpenBlocks):

Something like this. I use this trap to kill mobs one by one by teleporting them using portal gun. So the question is - is there common sense to build such complex (comparatively to the first one) mob trap to get liquid XP instead of Mob Essence? I can see that Auto Enchantment table from OpenBlocks works much faster (instantly), does not require energy and liquid XP is more bright (which is just good looking) and has more uses - it can be absorbed using xp shower or tank (OpenBlocks). But HUGE disadvantage of Auto Enchantment table from OpenBlocks is that it doesn't enchant books.

So how can I calculate real cost of liquid xp and mob essence? Other words - how can I calculate how many zombies should I kill by each trap to get 30 lvls cost enchantment?

Solution 1:

OpenBlocks Liquid XP has two big advantages: first, it stores 50 XP/bucket compared to LXP's 10; second, if you put it into an OpenBlocks tank, you can right-click with an empty hand to instantly consume enough XP to gain one level. LXP requires you to use a Fluid Transposer to put the XP into Bottles O' Enchanting in order to gain levels.

Solution 2:

So why not do testing? With this setup:
we can tell that each kill with the grinder gives 666mB of mob essence. Now when we switch to openblocks, we get which produces ~50mB of Liquid XP.(Sometimes more, sometimes less) Now let's convert that to Mob essence:. With our first kill, we got 664mB of Mob essence! That is 2mB less that the Grinder method. So we will stick to the MFR method. What if we want to convert it back? We use an auto-enchenter(Yeah, that sucks). If you place glass bottles inside, you get XP bottles. So with the 666mB of mob essence, we only get 1/2 bottles. This means that to produce 1 bottle of XP, we need 2 kills with the grinder. With the Openblocks setup, we also needed ~2 kills. So which method to use it up to you. To answer your question, lets do more testing. We will put a book in the auto-enchanter. We need 25 zombies to get a level 30 enchant on the book and we get 138 mob essence remaining. Now with the openblocks setup, we need 27 kills to get the enchant. (Using XP-MobEssence) With the OpenBlocks enchanting table, it takes around a lot more kills. So, I would recommend using the MFR Grinder method.