The wikia page is long out of date. GT5 info is found in the FTB Gamepedia.I've completed a large chunk of the Thaumcraft research with mostly just Eldritch stuff and the higher end TT2 that I haven't uncovered yet left to do. One thing that seems sort of interesting is the Magical Energy Conversion. Has anyone played around with this? It seems like it would be possible somehow to farm items off mobs to fuel these things. And once you get to the point of having the capability of EnderIO spawners, a wither skeleton spawner and thus farming Withers for Nether Stars isn't that out of the question. 10,000,000EU per Nether star according to FTB wikia?
The netherstar is now 100mio EU(minus loss). In case you really can farm the wither without problems it might really work quite good. The magic generator is limited to MV until you have a fusion reactor to produce europium.