Northern_Brewer
British - apparently some US company stole my name
What POF- wine yeast did you use that wasn’t killer? Only POF- one I know of is K1V-1116 which is killer
Uvaferm/Steinberger 228 is probably the easiest to get hold of, it's reasonably easy to find in bricks and there's places in Eastern Europe that repack into retail sizes. The thread mentioned above is here.
Lately the Sapwood guys have been playing with some of the VIN series from Stellenbosch which are killer positive but POF- and with some interesting biotransformation/glucosidase activity.