Angusman,
We have a Foremost here at the ranch that we've used for 10 years. We've run thousands of recipient cows through it and it holds up well. I don't like the squeeze the best, and the side panels aren't the best to carcass ultrasound in, but other than that, I like it fine.
In general practice, I pull my son-in-law's Hi-Qual hydraulic chute. I've run about 1000 cows a week through it since mid October, and it's great to preg check in. Hi-Qual is also my pick to carcass ultrasound in and to Bangs vaccinate.
I do like the Silencer a little better for preg checking because of the way the head and tail gates open and close, but the side panels are really heavy and cause fatigue if you are carcass ultrasounding more than 150 or so in any one day.
Powder Rivers are the absolute worst to preg check in in my opinion.
So, there you have one vet's opinion for what it's worth. For ranch operation, the Foremost is hard to beat.