I use one that is made by Lapierre, it works good. I don't see why they are so pricey but they work. I think either will do fine, just get the cheaper one. Mine is the one they label DOFC but when I got it the price was only $125 which still seemed too high. It does prevent lots of messes and you don't need to keep checking how full the barrel is while filling. I run the overflow J bend into a 4 or 5 gal SS pot on top of the drum because I don't want to fill a second barrel in a row very often. While filtering I just glance at the overflow hose to know when the barrel is full. Syrup in that hose means barrel full. Simple, and keeps the syrup where you want it, not all over the top of the drum or on the floor. The other one Bascom shows looks like it should work too, but all barrels must have the bung at the outer edge of the drum. Mine do, but I've seen many that aren't, they are in the center.
With mine, when the barrel is full I just shut off the pump on the filter press. Then I release the cam lock and lift slowly so I don't have drips falling off the longer tube into the barrel. I then use a dish or cup or bowl to catch the last few drips as it is lifted, for a totally clean barrel top with no lost syrup.
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.