My XR that I bought on launch was still going strong in its third year, until I dropped it in a lake. Only 20 cm deep, for 3 seconds, but it was enough to kill the screen :( I would probably still have it if that didn’t happen.
That is such an awesome looking keyboard for my retro machines. Right now I have their original membrane keyboards, and they became even more mushy after all these years, they are terrible, especially the Compaq XD
OG Xbox is pretty easy to restore, would recommend that you do it soon. Some models have a battery that will leak. Also get thermal paste remover, the paste they used on the thing is more gum than paste. I could not remove it with alcohol or anything else, it was hell. Maybe also replace the fan with a more quiet fan. I had a lot of fun restoring it, really worth it!
If you are lucky and won’t succumb to cancer before your pension that is.