I just finished my battlesuit from the quantumflux mod. Man that was expensive. In fact, just about everything in that mod is way too expensive for what it does, especially since so many of it's items overuse the same rare materials again and again. This prompted me to look into energy storage for my fusion reactor I just built, so I started looking into the two major mods in this pack with energy storage, and I added up and compared top tier power storage between the two, quantumflux vs enderIO:
The highest tier power storage in the quantumflux mod is the Quibit Cluster level 5, and in enderIO it's the vibrant capacitor bank. The quibit cluster provides around 12 1/2 times higher capacity than a vibrant capacitor bank (VCB from here on out), so this allows me to compare the material costs by scaling up the number of VCB's I make. For my estimates, I factored on making 13 VCBs compared to the 1 quibit cluster level 5. I mainly looked at the harder to aquire material costs as the rest of the supplies are easier to get in large quantities.
The quibit cluster costs approximately 362 diamonds, 576 gold bars, and 768 iron to complete, not to mention the time it would take to craft up from 256 level 1 clusters.
Compare that to making 13 VCBs which will cost around 13 emeralds, 416 gold bars, 117 ender pearls, and 52 iron.
Personally to me, even though the VCBs take up more space, I just can't get past the crazy diamond cost and time consuming crafting the quibit clusters have. I guess you can automate it with crafters, but it's still tedious. The real problem I have is that I'm very diamond poor after making my quantumflux battlesuit armor, and that makes my choice for me. There needs to be a better balance of resource costs inside the quantumflux mod, as it's so diamond/gold heavy it makes everything in the pack feel way too expensive for the function it provides. Spread out the resource costs with some resource diversity. Minecraft has so many other resources to choose from as recipe ingredients, why make everything require diamonds and gold?