You also need to think about what you are interested in - Mobile Development/Embedded etc or the usual s/w development like Java/.Net/Datawarehousing etc.
Samsung usually gets into the first category, Deloitte into the second. If you are into a Banking related project, work might get mundane after a while (Usually they call it BAU projects - Business as Usual meaning Enhancements/Bug fixing etc). I am not saying it will be just that, you might get interesting projects as well.
Also, Usually if you are into mobile related/Embedded jobs etc, the pay packet might be more compared to the others. Just my opinion. Research before you decide on either of them. Check with your seniors in Deloitte for the kind of projects you might get into.