Your choice on the Murphy, all I can say is that I really like mine, I bought both a Murphy Cup and a Murphy Float. I use the cup when drawing syrup and the float in the finisher with a good digital thermometer to read the temp. The Murphy does not give you the temperature even though it is in reality a thermometer with the temp. face exchanged with a density scale, but if you know the temperature and what the Murphy reads you will be able to know the density.
The decision to buy or not must be yours.
Dave Klish, I recently ordered a 2x6 wood fired evaporator from A&A Sheet Metal which I will be converting to oil fired
Now have solar, 2x6 finish pan, 5 bank 7x7 filter press, large water jacketed bottler, and tankless water heater.
Recently bought another Gingerich RO, this one was a 125, but a second membrane was added thus is a 250, like I had.
After running a 2x3, a 2x6, 3x8 tapping from 79 taps up to 1320 all woodfired, now I'm going to a 2x6 oil fired and a 200-425 taps.