Kindly suggest suitable tools for PCB Design

Hi,

1. Kindly suggest the suitable PCB Design tool to design: Schematic, Footprint, Layout, Gerber with including feature like Simulators, Impedance calculator, DRC, ERC, BOM, EMI/EMC simulator, etc.

2. All the feature will come with single tool or we need to by license individually?

3. Any multiple Tool variants/version is available or only only one variant? If multiple variant available, What will be the difference to select right one?

4. Where i can buy this tool?

Thanks and regards,

Naveen K