I'm a dealer for Control4, and based on what you would like to do, doesn't seem terribly difficult for C4 to handle.
Control4 has the capability to add on over time or immediately. They have C4 dimmers, hvac thermos, door locks that can be retrofitted in and are all zigbee(rf) that grow a mesh as u add more zigbee products.
The new Hc800 adds a faster processor, greater zigbee range and lightning fast on screen navigator. Also add an SR remote for simple use in your living room and get the IPhone/iPad app the C4 Myhome app and turn all your phones/iPads into touchscreens with two way feed back.
Personally, I have installed, programmed most of the remotes mentioned above and decided on Control4 due to hitting a greater market at c4's price point, add on capability and the easy functionality of control over complicated systems. An addition C4 has remote access, and email notifications.
At my home I have a 2 year old and a 6 year old, and oh yeah a wife, and all can use the system which includes 790 DVDs in two Sony changers, door locks, light control and six zones of audio and video distributed. I get emails when the wife or mother n law unlock the front door with their codes, and lights turn on for my kids at night when they run to my room or have to use the bathroom, and shut off when theyre done.
There are tons you can do with C4 and at a good price point that doesn't break the bank, easy to use and can add on over time.