These guys are the best. I received a pair of RTI8 yesterday to replace my SDA 1C's (made a deal with the wife) and one of the grills was messed up. Called customer service this morning to see what it would cost to replace it and to my surprise they just ask me for my name and address and told me that a replacement grill will be on its way. This level of service is what creates loyal customers.
Count me as someone who will be a customer for life.:)