Extruder:
Mostly stock Filastruder v1.6 #1870 extruding vertically with full barrel header wrap insulation, melt filter, and a Filawinder

Drying:
The pellets came with no desiccant so drying is recommended. I dried mine for 4 hours in an ultra cheap Rondo dehydrator. Temps were around 159f. After drying, the pellets were immediately transferred into an old OS3DP bag with 3 desiccant packs for good measure, then sealed and stored into a moisture-seal tupperware.

Extrusion:
Temp: 190.0c
Rate: Speed was a grueling 5-7" per minute.
Average diameter: 1.785mm +/- 0.02mm
I would personally give GP-35 an average of 0.01mm tolerance, but outside of 4' in length I had a couple inconsistencies.

Printer:
Highly modified home built SD2- Lawsy carriages, E3D Titan extruder, E3D v6, E3D Volcano 0.6mm brass nozzle, direct Y drive, DRV8825 stepper driver, Supernight PSU, bed stabilizers

Printing:
An upscaled keychainless Marvin, Filawinder part, and a Florida Gator...my father-in-law is a Gator nut.
All .1976mm layer height
90% infill

Part for a Massive Geared Heart which I make for my daughter every birthday.
.3951mm height
60% infill

Comparison to available filament:
None. Most ABS filament has a sheen which reflects light whereas GP35 behaves likes PA747 and is more of a flat/matte finish. I have never purchased filament that behaves like GP35, but I know most filament manufacturers actually use a custom blend of several different polymers.

Takeaway and comments:
As stated, the extrusion speed is the biggest setback of GP35. It is very affordable, so I may end up using GP35 to stretch out my supply of other ABS types since the speed is ungodly slow. At 50-60% slower than MG94, GP35 is hardly reliable for producing filament for anything other than hobby. I prefer the matte /flat finish materials even though they are slower in extrusion speed, but a straight GP35 blend is ridiculous.
Enough beating the dead horse on speed, I will say that in contrast to PA747 (my personal favorite), GP35 does not "smell like cancer". The odor from GP35 is exceptionally mild which may please people looking for a filament with a flat finish without assaulting the senses. And unlike MG94, PA747, and PA757, GP345 has more of a grey coloration in the virgin uncolored state; This should be observed before adding in colorant.

Update:
I blended some MG94 in and the speed has dramatically increased. This will be a limited run since it is simply out curiosity, but I will add a better documented method soon. Since the GP35 is a touch darker than MG94 it will be interesting how it turns out and if it will or will not have color banding.