I dont really understand what your asking.
Why would you want to know what studio would be useful for you.
If it's software like is think, them it's just a matter of prefrence. I prefer Maya over all and i think it's the more easier packages to use. I also think it's the industeries most used comercally software package, although some studios just create there own package.
It's important to remember that while the technical process may differ slightly, the results should be the same. As for how long it take to model. It depend on indervidual skill and how complex the model is.
Yeah, but no but yeah but no....