What's the better Choice?? Seems like a NO brainer...BUT IS IT?

So I've been rocking with 89 ovr Jerome Baker and he's been holding it down on the left for the most part.  PU'd LT is on the Right Side.  What should the upgrade be?  Thinking in terms of Khalil Mack or Von Miller.

1. Mack and Von look almost identical attribute wise.  Mack has +5 strength over Von and much better jump.  Von has slightly better Prc and pursuit.  
2. Mack's price tag is over 600K to fully PU  
3. Von's price tag is under 450k to fully PU and could possibly save  with his Legend set.I don't quite have the 450k yet to do Von but I'm saving...for what I haven't decided.So what do you think...