I picked "DT Short/Williams vs Branch".
The primary reason I went this way is to not look at Branch simply as a DT but to look at him as a 3tech DT. To use the JS way to rate/draft the players I'd put Branch as a DT around say 75 in rating but as a 3 tech that drops off to about 65. In my mind Kawann Short gives a big upgrade in the 3tech (potential mid 80's).
The OLB role however is tricky. Malcolm Smith has shown to be competent, it's hard to rate but I'd put him around the 65 mark as well simply from his limited game time, the OLB's at the end of the first I rate around the 80 mark but going into the end of the second round there's not a huge drop off and I'd only rate them a few points lower than Ogeltree and Greene and in certain cases (Chase Thomas) actually rated higher.
Great post and poll however, real food for thought