Buffness hit the nail on the head, as did the other response (forgot screen name).  50/50 is beneficial because you dextrose is a high glycemic simple sugar where malto is a high glycemic complex carb source.  You get a nice insulin spike w/ both, but dextrose is in and out FAST where as malto takes a bit of time to get out.  Fast/slow release.  However, if like buffness you have a PWO shake then eat another meal w/in a half hour, all dextrose is acgtually better.  Whatever fits yourschedule!  Either way there won't be a major difference.  I for one prefer white rice Post WO w/ some malto.