I'm stuck in the no-mans land of not wanting to buy the new stuff but worried about the old stuff. I've been pushing the limits of my 2015 MBP on RAM and found a solution that should work for a while. I run several webmail and other tabs on Firefox (Yahoo Mail, Google Mail, iCloud Mail, Outlook Mail, Weather.com) and I found that I can save about 3.5 GB of RAM but running Apple Mail instead of the web versions. I'm rather amazed that these web applications use so much RAM. When I was working on Firefox back in 2002, the entire program used up 100 MB of RAM. So, instead of leaving tabs open, I open them when needed. This seems to improve overall system responsiveness. The main reason for this laptop is to run trading apps which use a fair amount of memory on their own which is why I had memory pressure. So one way to keep the old systems running longer - get more efficient with your process. I didn't do this in the past because Apple Mail wouldn't work through our firewall but having a personal system and a work system means that the personal system can use Apple Mail while my personal work system is for work.