It's very funny. I have the opposite situation.

I have a client with c4 and its my biggest headache. I'm there atleast once a month.

I have an RTI system put in 2010 still running. All the same equipment. When we heard about white screen issue we sent both t3+ back. At separate times.

I have a c4 system put in 6 months before that. It had to be upgraded to all new controllers and touchscreens. And last month had to upgrade to 2.8 at a cost of a $1000. Just so he could keep napster working.