They are both high quality instruments, but I'd go with a loomis if I were you. Those have higher 2nd hand value, if you one day descide to sell. I got my ATX for 2x lower price than my Epiphone, haha.. Yet it came with good pickups and its overall better quality guitar.
The iron cross inlays are pretty cool. I like them better than the active inlay of my ATX.
I havent playd the loomis enough to make a statement so dont take this as a fact, but my impression was that the Blackjack is more agressive in tone, while the Loomis and Hellraiser are more growling.