You may have good reasons to upgrade, but if the C80 is malfunctioning or looking worn, replacements are available and just drop in.
I love my C80 classic. |It does everything I need and when the display on the original went flaky, I went to eBay and found a like-new replacement for not too much money. The replacement has now been in place for two years and is working well. At the time, I considered upgrading, but didn't see much advantage and doing so would have required changing the radar, etc.