What a great and much needed and appreciated topic.
Thank you for posting this, Joylynn!
Great recommendations from everyone.
One place I found recently:
Bens Appliances and Junk
They focus on appliances and, when/where certain parts are known to be problematic even from OEM, they have released replacement parts to "upgrade" for the goal of better performance and/or reliability.
The caveat of the "upgrade" is, of course, the actual long term track record, which only time will tell.