One thing to consider is that at Deloitte, as at any big 4 you are in for a well structured career track that - assuming your performance is good - will mean yearly wage increases. Whereas in most companies (I can't talk specifically about Sears), you might find a more stagnant career, with bigger but more spaced jumps (typically when your boss is promoted, or the business requires more people).

I have worked at big fours in two separate occasions and it is not rare to see long careers that average a yearly 15% increase.