"So after several processors having internal memory card failures, I have
very little confidence in the reliability of 3 series processors. ?What
is everyone else's experience with this?"
Been working with 3-series since they came out and have not had a single one fail with a memory card issue.? In fact, I'm not sure I'm aware of any installed processors needing to be replaced for any reason, period.
That includes the MC3 running my home AV system...
I do remember a story about a Crestron engineer that had to delay the start of their vacation to investigate mysterious issues at a large client's site.? Turns out the developer's code was writing to a file with some kind of unnecessarily high frequency and killing the cards in all the processors at the site...
? - Chip