NH F and OZ F have great seats. TG F is more like LH F, a bit smaller and less privacy, but good enough.
I personally did not like the new SQ F (on the 777) too much. Lots of space, great flat surface to sleep. But you need to get up, fold the backrest of the seat forward to make the bed. There is no 'in between' position between sitting and flat. Sitting and watching TV is uncomfortable in the Bed position. And watching TV is also uncomfortable in the sit up configuration, because the back does not recline enough.
UA F (the new one, don't even want to talk of the old one) is the smalles of all seats, Food is more what you expect in Business and Service is the typical UA miss and hit.