Science Sig Stone Dilemma - I need advice.
So I have a 5/65 Cap IW (awakened, sig 120), an unawakened 3/45 HT, and an unawakened 1/25 Void. I have 3 science awakening gems but don't have much access to sig stones, however I will be getting more sig stones from the heralds of galactus side event. I will be getting about 40 more generic sig stones this month. Should I keep investing in my 5/65 to get him to max sig (I don't have the despair mastery), awaken and invest in Void, or awaken and invest in HT?
Please explain why into the comments as I'm not an expert in either Void or HT.