As a practicing veterinarian, I had occasion to use a bunch of different chutes/headgates - Priefert, Powder River, Foremost, lots of off-brands. Most have at least one good thing going for 'em, some have some bad features that override any good.
Currently have a Stampede - we took two good years looking at one after another, to replace the old worn-out rusted-up 50-yr old WW we'd been using for the past 20 years, before we settled on it.
It's OK, but there are some (OK, a lot of) things I'd change about it.
Best thing - you're not constantly whanging your head on bars or hinges sticking down in the working area outside or inside the chute, and no sharp pipes/sleeves inside to damage cows' feet.
And, it's HEAVILY constructed.
After losing two cows in two years that went down in the old WW, shoved so hard against the headgate that it took running to the barn to get a crowbar to pop the latch, a brisket bar looked like a must - and for the cows, it's OK, but it's a PITA when you're working little calves.
The arrangement of the side gates, allowing swing-out to gain access to udders, feet, etc. are nice.
I like the parallel side-to-side squeeze - but it's not handy to have to go to the front of the chute to let the squeeze off, if you're operating the headgate from the back.
I've never encountered a 'self-catching' headgate that worked worth a crap, and this one is no exception; open it too wide, and they can blast through there and if they get a shoulder through, you can't close it, open too narrow, and they won't put their heads through. I do not like the rear headgate operation setup on the Stampede - too much 'slack' in the system to operate as well as I'd like. Visibility is such that I can't see the cows' head moving through very well - have 'missed' a few(fortunately none hip-locked), and I close the gate on heads about a quarter of the time - makes 'em back up and they're reluctant to stick their head through again.
Maybe it's not 'timed' right, but way too often, the gate on the right side doesn't latch closed at the same time as the one on the left, requiring either having to have someone on the other side of the chute shove it or shove the cow forward a bit more 'til it latches.
If the cows/calves come into the chute, but back up against the rear gate, there's not enough space between the bars on the palpation gates to get an arm or pole in there or to get hold of a tail to get 'em to move forward.
The 'ratcheting' thingies that are supposed allow you to use a bar push a balking cow or calf forward are only useful if the back of the animal is forward of the palpation gate - for a mature cow, she's virtually got to already have her head through the headgate to even be able to get a bar in there. They've been almost worthless for me.
The neck access doors are dicey - I've had some cows/calves manage to pick 'em up and push 'em open - but Ive managed to slam 'em shut or push their heads back in before they get too far out. First time I used the chute, I forgot to close one of the neck-access doors, and the next 300lb heifer through the chute squirted out through it and hip-locked. Couldn't get her out, couldn't push her back; had to anesthetize her and cut the d@mned thing (the door, not the heifer) with the Sawzall to get her out.
Hmm. Looking back, it looks like I don't like it all that well - but, it's about as good as any other I've used, it's paid for, and it's better than what we had. I don't anticipate buying another working chute in my lifetime, so I guess we'll stick with it. But...I might go with a For-Most, if I had it to do over again.
so I can decide with or without. 
