I ended up ordering both after 3 days of mulling it over lol. I could have gone all Hellboy and BPRD to take full advantage of the current sale, but I settled with picking up LE's 3-5 for now and tossing in Powers Definitive v04. It's just nice to finally own some self-contained, already finished series I can sink into without hesitation.
Now I just need to wait for Saga Deluxe v01 to come out in November. Seems like an amazing deal for the amount of content.