Hard to make a hierarchy between Reinbacher, Nemec and Jiricek because well, they're 17 to 19 yo kids.
But personally, at the end of the day I think Nemec will be the better of the 3.
He might have less of a physical hedge, but he has more of a cerebral approach to his game, which could make him a defenseman that will have a greater career.
Both Jiricek and Reinbacher are complete defenseman, physical guys with a good shot. Both play good defense but I think Nemecs' smartness will make him more of a minute muncher.
He was 2nd on his AHL team (-9 total) with +13 at 18 yo, he's pretty mature.
He was a steady Eddy both in terms of global play and progression.
Plus defensemen with such a high hockey IQ tend to have longer careers.
Andrei Markov, Niklas Lidstrom, etc . style.
P.S.: in my mind Jiricek and Reinbacher are +/- even. Both excellent defensive prospects.
As I said earlier in this subject, if Habs fall out of the top 5 because of the lottery, I would be very happy with Reinbacher at 6th or 7th overall.