My gold is once again over 100M so I dont need to worry about that for a long time and I am not hitting sac events as hard because they have not been as good to go all in on recently. So Powerslave all the way for me so that I can also level up loads of allies to 99 (or close to that for the next evo/sac event....I accidently collected 12 Bomber Boys for a starter!) and the ironite is a bit better and you can always use ironite!

Not botherd much about other upgrade stuff as I am overflowing with them all.. I wont need skill shards for a very long time and recent events have boosted up SoW again so all is good in the land or resources at the moment.