I used to play Voltz once upon a time, and as a person who spends the majority of their time mining, I miss a few things from that modpack. Namely obsidian pickaxe/shovels and the best (probably OP) tool, the atomic disassembler.
Both of the aforementioned items are absent in Tekkit, okay fine, but what should I aiming for to hopefully recreate the digging speed of the Voltz tools? So far I've been getting by, painfully by using hardened tools, but that's just a fraction of the speed comparatively.