I have used many applications for insteon for my clients who insisted on it for pricing and it's been subpar at best. Poor reliability, lack of features and compatability make this a technology that hasn't and probably never will take off. On the other hand, Lutron is completely reliable, and can be integrated into just about any control system. It is a premier lighting system.

Look into Radio Ra2 - it's approx 10% less than RA and very affordable. We use it for most of our installs and our clients are very happy.

Vincent

PS - I noticed you did not indicate what you were using for an extender/processor. The MSC-400 would be the weapon of choice since ideally you want to be cnotrolling this unit with RS-232.