Derby, I bought the complete setup.  Tub, slick-gate, three 8' alleys and the squeeze.  I think I paid ~ $12,000 for the system, delivered.  I'm very, very happy with it, although I did configure it a bit different than they recommend (big improvement).  I looked over a bunch of other brands at the farm show in Louisville last winter, and didn't seen anything that would have made me change my mind, unless going to a hydraulic setup.  We just ran our cows thru it this morning to preg check, and the vet's comment was that she gave us 10 out of 10 for facilities.  

I'm not sure where you are at, but if you are anywhere close to me (near Owen Sound, ON), come by and take a look.  I'd be happy to show the setup to you.