Depends on your situation. For cow/calf pair operations, I agree the For Most is a good one. For feeder cattle, I like the Priefert chute and a powder river crowding tub and such.
Bought a For Most last summer and think its great so far. The vet I worked for in college had a full For Most system. We've got a WW sweep and alley attached to our For Most. The vet clinic I worked for after college had a Priefert and its a good one too. I've put thousands of cattle (all sizes) through that Priefert with no issues.