Hi,
This has been covered before, but even though I sell the LM4's I would not recommend them. The reason for this is with the individual PCS switches you wire the house in a normal manner, which any electrician can handle. The LM4 on the other hand is wired uniquely. With the individual switches you could change out brands anytime in the life of the home with a multitude of other brands and technologies. With the LM4 you have boxed yourself into a bit of a corner.
I don't think anyone is nuts using high end X10, I routinely supply products for multi million dollar homes. High end X10, with scenes creates amazing affects that greatly enhance the value of these homes.
X10 is very reliable if proper attention is paid to phase coupling and noise control. Also the better X10 products have a much greater tolerance for system problems.
Bill
www.homeautomationnet.com