The goodies you are asking for are too good!
Anyone who buys a Powermate is buying it for keeps.
In the wide field 6-10mm department, I believe Mick Pinner might be looking at selling an 8mm Stratus soon. I looked at it at camp it is in good nick, just like it was when I got it. He bought it from me
. Very nearly as good as an 8mm LVW.