I mostly use Esun but thought I'd try this brand just to see if my print quality improved. They advertise strict tolerance, and their price was only slightly higher than the Esun product I was using. Overall, I rate this as 5 because I did have a noticeably better print quality. I looked specifically at layer similarity and it was more consistent. That lead to an overall better print. Also, I use a glass/hairspray adhesion combo, and I had no issues with this warping off the plate during print. After the bed cooled back to room temperature, the prints popped off with little force even on large footprint parts, which is a huge plus (doesn't disturb bed leveling). The Esun seems to stick too well, and in some instances, requires force to remove. I'm not sure why there is the difference, since I print with the same settings. Could be totally subjective. You might give this a try if you are looking to give your print that slightly better look.

I don't know if red pigment additives might be the culprit?
I had some red filament from ultimachine many years ago and this stuff seems to be of comparable quality - which is not to say that either one is bad. I just seem to get marginally nicer prints using black, orange, white, or grey filaments.

It has kind of a fishy scent, but it seems to dissipate.

Overall, if I wanted more red prints, I wouldn't hesitate to use this filament.
But, if color is not important, I'd rather use one of the others.

I have successfully used this ABS to print replacement herringbone gears for my printer. (http://www.thingiverse.com/thing:97377) Components are virtually impossible to break. For components that don't require thin walls, I've had very satisfying results.

I do have trouble printing components with walls. For example, if I try to print a 3"x4" raspberry pi case with 2mm thick walls, the layers will not stick together well enough to produce a sufficiently strong part. Outer walls will separate or snap if I apply any force to them, and applying any sort of torsional force results in layer separation throughout the part. Part of this may be inherent to ABS, but I haven't had as much trouble with another brand I use. I'm at 73F ambient temp, not a drafty room.

Lulzbot TAZ 4
230C extruder temp - extrudes well at this temperature
90C bed temp with glue stick - adhesion to bed is not an issue

I'd be very interested in hearing any tips that people may have to prevent delamination of parts with thin walls.

This is the first ABS filament I have used, so I have no basis for comparison other than PLA, which is not too fair to compare to, so I'll try not to

First, it is pretty tough to work with because it doesn't stick to the print bed. If this is your first ABS filament too, be prepared to also buy kapton tape and also use acetone juice to make stick. Do a youtube search and you'll figure it out.

Once you get the ABS to stick, the things I've printed are really tough. They are a bit flexible, but really tough. Something odd is that the filament roll is black, but when you print something it's more like pine green. Again, I have no other experience with this type of filament, so I don't know if it's normal, but just so you know.

You may have to print with 80% or less fan speed or you may get heater errors. Also, I don't think it works with any extrude size less than .6 because they clog. I got it to work with .6 and .8. Maybe at higher temperature (I use 210), but you'll have to play with your fan speed again.

Shipping was not great. I had to order this twice because the first time seems to have been lost or stolen by UPS staff. The box was half open, which really appeared to have been pried open at the tape. I was there when they deliver it, so I know it wasn't opened while on my porch.

I give it 4 stars because I cannot compare this with something equal and because of the shipping and discoloration.

There are many variables in 3D printing, not the least of which is the filament. I have used filament from at least 3 different suppliers with, in general, good results. Sometimes, I go with a certain supplier because I can't get the color I need elsewhere. Gizmo Dorks filaments are cheaper than others and I really don't see anything wrong with this brand. So far, I have only used ABS filament.

Having invested over $2500 in the printer, the cost of the filament is a wash, at least to a home hobbyist like me. My experience has been that the more I print, the more I learn and get better results. So, if you can save a few bucks along the way, why not?