It's funny how not even the XL is anywhere near showing signs of degradation, and it is now older than the 4000 was when degradation began being reported. Thing is, both the XL and the Intellistar were built to last, and they most likely will for quite some time. I too like the Intellistar, but especially with the new LDL, I don't think TWC is using the Intellistar to the best of its capabilities.