You won't regret having one mate.
I fit a BG one in my mom and dads house when their integral timer broke, and I have one ready and waiting for when I finally buy my home.
Im finding more and more people are coming round to the idea of this type of technology and really think its the way forward.
When I'm out on the lash I switch ours on in the taxi on the way home and the house is lovely and warm at 4 in the morning when I get back
obviously this type of thing is never going to appeal to the old dears who still love their back boiler and fire, but for younger people its amazing.
More ore and more people now have different work patterns and shifts and don't know when they are going to be home, so this enables them to turn their heating on remotely and save heating an empty home, so it'll pay for itself in a year or so.