I'm planning to implement home automation using z-wave protocol, probably using vera edge as the controller. Not much device using Malaysia Z-wave frequency, so probably using EU frequency. What I plan to do:
1. security: integrate with NAS, IP camera and Alarm system. Compatibility is important for the communications of the devices. Thus, I'm getting Asustor NAS and Hikvision IP camera(with motion detect, alarm IO and audio IO) which is compatible with the Asustor ADM. Asustor will send email and SMS(need subscription) once motion detected from IP camera. eg: motion detected on the window area (before someone go near the window even before he touch the window). Alarm IO of the IP camera will connect the Z-wave binary sensor which connected to the Vera Edge. Then, Vera Edge trigger the outdoor flood light to deter the potential burglar. In second stage when he insist to break in from the window, alarm came in when trigger the sensor on the window. Of course all these will be under monitor remotely, looking through ip camera from mobile phone once the first stage triggered (received email & sms). PIR sensors will be installed indoor too, including the attic in case the first line of defend breached.

2. Automation: Since the alarm is connected to Vera Edge, PIR from the alarm can be used to automate the switching on or off the lighting during the alarm disarmed/armed stay mode. (eg: walk to kitchen, movement detected, switch light on. After no motion of period of time, switch off light to save energy.)
Another thing I plan to get is the z-wave smoke detector so I will be notified when something is burning in the house. Not sure if there is smoke detector + air quality monitor that include detection of gas leakage, if there is such product is even better can alert when gas leak from kitchen.

Besides the above, normal stuff like lighting switch and some wall plug switch will be z-wave enabled too. Zwave IR remote is a nice touch up to control gadget that is IR controlled too. As for the lock, I will use the traditional lock. Because I'm kind of a paranoid just in case the system is being hacked or breached  Therefore, any remotely accessed content such as IP cam feed will be tunnel through VPN from remote to home. No port will open/forward, just the VPN. Guest WiFi will be VLAN separated so visitor will not have direct contact with the system.

All the above will be  DIY including the alarm because need to use compatible alarm system but still need to figure out where to get all the components