Advice on grooming chutes

I'm looking to buy a new grooming chute, any advice on what to buy or not to buy.

Thanks every one 

Hybrids at nice - light but still have a steel bottom in them

aluminum are very great but if you have a cow that isnt 100% happy they can drag it around or flip it with a bit more ease.

half chutes are great if you have a cow that is 100% broke and good at standing in the chute. you have less control or containment option with the half chutes

I like the hybrids.