Choice for wall switches for lighting

[Lusch]

What brand / type of z-wave wall switch module would you guys choose regarding to following requirements:
- Buit-in and connected to existing switch, no batteries etc
- input for switch preferably indepent to control from output of the module
- I need to be able to activate a scene in domoticz when I press the switch
- Dimming function

Sorry if this is a noob question but these things are expensive and I need about a dozen of them so I want to make the right decision .

[pvm]

Fibaro Dimmer 2. Matches all of the requirements.