So...OK this is probably slightly unethical but....
I obtained a CPAP machine & mask and tried it out last night.
Wasn't as bad as I thought it would be. I lowered the pressure a little, jiggled the mask & straps a lot to get comfortable and fell to sleep.
I woke up a couple of times in the night- probably due to not being used to having something stuck on my face.
I woke up this morning to my alarm at 6am (work this Saturday!) and I felt like really quite amazing
Even after one night and with the waking up, I feel like I had the best sleep in many many years. I've had loads of energy today and have been in a brilliant mood!!!!! No snoring at all too according to my wife.
Also, I didn't have a headache or a sore throat...
The only downside is the bridge of my nose is a bit sore and has had a red mark on it most of the day. I expect I overtightened the straps.
So, feeling this good after one night has made me realise how utterly crap I usually feel. I now have years of sleep to catch up on, probably decades!!!