Both lenses should produce good results. There will be those who argue the merits of one over the other...but other then the extra stop of the one lens it really is a matter of splitting hairs.

The one thing that is true of the El Nikkor lens is that it will transmit UV light better then the offerings of Schneider and Rodenstock. This may or may not be a consideration for you. This would be a consideration for someone who may consider converting to the new Azo light head that is coming to market. Reports by a couple of independent sources attribute a stop more UV transmission through the El Nikkor lenses.

I own all three manufacturers offerings and I don't have an "axe to grind" in this.