PSU and Reci compatability advice

I have a 100w reci laser with a JYJG 80w PSU(came with the machine when I bought it). I think PSU is fried now and I have to replace it. I know it was undersized but I rarely used the laser anywhere near full power which I presume is why it lasted 4 years.

On the machine I mostly engrave wood and cut sandpaper so my 100w reci is oversized. I only really need the Reci W1 75watt. My current 100w reci is 4 years old so i presume its near the end of its life so when it is, I will downsize to the 75watt W1 reci.

Id like to get a decent PSU to replace the cheap chinese crap i have now. Im looking at Cloudray as they seem a trustworthy site from China. Im in EU. W&Z&Es Series – Cloudray Laser

Am I right in thinking the Cloudray 80-100W HY-Z would be compatablie for both the W1 75w reci and the W2 100w? This would be ideal as then I wont need to buy different power supply when my existing tube dies and I downgrade to the 75w. Or am I better getting the 100-120watt PSU? Any advice as to what is best to do?