Is the SC1200 any better, if so why? How about reliability?
Suggest you search this forum for "SC1200", "SC1200 problems", and make your own conclusions.
There have been a lot of problems with SC1200 posted on the forum, but my own assessment is the majority of posting do not necessarily indicate a reliability problem so much as installation problems. DS12A Window sensors are critical with magnet placement, which is more difficult since the magnetic switch is inside the DS12 case. Also it seems the SC1200 has range complaint problems which is the norm for X10. These seem to be the bulk of the complaints.