I ordered a dozen of the Hunter Turbo Nocks to test out. Nick was very kind in also sending me a half dozen of the DeadX to play with (thanks Nick!)
Here are my findings so far:
Equipment: Forge CW33, 62lb pull, 31" draw, (chrono'd last month at 237fps), mechanical release, Whisker Biscuit (original), GoldTip Hunter 5575 arrows, Cobra Sidewinder sights.
Day 1 -
Removed fletchings from 3 new GoldTip Hunter 5575 arrows.
Installed 3 of the DeadX nocks.
Installed 125g field tips.
Instead of moving my nock up 1/8" as Nick suggested, I just added another nock above mine which raised the nock point slightly over 1/8" and still afforded me my original nock point.
Fired 3 downrange - 1" group at 15 yards.
Fired 3 more downrange - 4" group all over the place at 15 yards.
Fired several more downrange -
I found the DeadX nocks to be faster than fletched arrows but hit consistently 1 foot lower and left-right than my fletched arrows - probably due to the nock point moving.
Adjusted sights.
I put lipstick on the DeadX nocks and fired through my whisker biscuit - didn't see that the nocks were hitting anything other than whisker.
Fired 3 more downrange - 1 hit bullseye, 1 was 9" right, 1 missed the bag left and took me an hour to find.
(Edit: I'd like to point out that my fletched arrow groups prior to messing with the bow here were within 1 1/2" circle at 25 yards.)
Day 2 -
Took my bow to the professionals for tuning 
Removed my nocks, added a different style peep, added a string loop, added a kisser button (grumble), aligned my whisker biscuit to center shot (was about 1/4" right of center

)
Resighted in the sights.
Fired 3 fletched arrows w/ field tips downrange - 3/4" group inside the bull at 15 yards.
Fired 3 unfletched arrows w/ DeadX Turbo Nocks downrange - 3/4" group about 2 1/2" high of center bull.
(I did not move my nock point for the turbo nocks nor did I readjust my sights.)
Several rounds of 3 fletched vs 3 turbo nocks followed with very similar results.
I believe the DeadX Turbo Nocks are hitting "higher" because they have a flatter trajectory than my fletched arrows and although I didn't have a chrono they "seemed" faster. They had a very repeatable tight grouping - equal to my fletched arrow groups.
The shop owner seemed impressed by the Turbo Nocks so I gave him 3 of the Hunters to play with.
I will test the Hunters later after I verify bow tuning with 3 blade 125g Muzzy BHeads. But from what I can tell so far I think I will like them.
I think its obvious Mr. Snook has a good product here and its apparent he is willing to help out with tuning issues and resolving problems. I'll post Hunter Nock results in a week or so.