what do you want automate?
I looked at x10 & thought it was expensive as the UK isnt a big marrket, our sockets arent massed produced.
lightwaveRF pretty much does everything as does z-wave (though expensive).
You may also want to look at zigbee, which is a recognised worldwide standard that allows anyone to design for it.
I agree X10 is expensive for UK fittings, which was half the reason for posting on here to see other peoples thoughts/experiences..
Ideally I want a system that I can expand as I go, which allows things from light control to alarm systems, and single button activations..
I.e.
Alarm - Arm alarm, turn off lights, close curtains, lock doors, and allow to monitor status from remote locations..
Home cinema - Close curtains, dim lights, turn on correct equipment.
Bed time - Go to bed, turn off all lights arm zone 1 alarm lock doors, heating off
Maybe automated lighting based on movement around the house.. Sensors would be dual purpose (alarm and lighting)
Like I said I wont do all this from day one, but will add to it as time/money/location suits providing I can find a system that works and doesn't cost silly money..
Will take a look at zigbee, cheers for the suggestion
Regarding the IR light switch and TV HIFI etc, have you thought about just using a harmony remote? It should do what you want out of the box, although light dimmer location may require something to redirect the IR signal?