John, you sound to be going through pretty much the same experience as me....
I started out with a new Record scrollsaw at the back end of 2015.
Got hooked on the hobby and upgraded to a second hand Delta 40-560 bought on eBay. This was cheese and chalk to the Record, quick blade change with both quick blade release and tension release. An altogether better-built machine with cast iron everything, very heavy and virtually no vibration.
It was a joy to use but was very old and starting to show signs of wear on the arm linkages. I discussed this with my friends and advisors on here -
https://www.ukworkshop.co.uk/forums/new-scroll-saw-maybe-t105408.html
In the end, I went for another, much newer Delta off the for sale forum on here. It is a Delta 40-694 and is another whole step forward. I still have my first Delta and won't sell that, the Record has gone...
The 40-694 is bigger, with 20" throat, weighs approximately 1 ton! no vibration, quick tension release, liftable top arm for easy blade insertion when doing internal cuts. And, I haven't broken a blade since I got it, a regular occurrence with both the other saws.
My only gripe is that it doesn't have a quick release blade clamp like the earlier model. That said it is still tool-less so it is not a really big deal.
Do you reckon I like Delta's? You bet. Look for a second hand one and you definitely won't be sorry.
Phill