VPS hosting is necessary for those who need no restrictions on software installation and configuration.
Choose a host who understands your specific needs, and who can sit down with you and talk about what your needs are, and how that host can accommodate for those needs. Take a look at these reliable vps solutions:
1)
Exmasters.com
2)
Regvps.com
They have the ability to fine tune your system for peak performance, install custom software and set up custom network services.