Well yes, under floor heating is more efficient with the right insulation fitted below however I think it all depends on the size of the rooms/spaces you are trying to heat and after furniture how much floor space you have
Under floor heating is the bee’s knees for large areas, i.e. offices and large homes, the heat is even through out the area, walls are free to with what you like and by heating the very surround, correctly insulated fabric is very economical. Radiators do not stand a chance
But we live in the UK, rabbit hutches for homes, even larger homes built now are only the size of our parents homes, by the time you have fitted a bed and wardrobes, side cabinets, what uncovered floor space do you have you in a bedroom
Like wise fit you sofa, chairs, side units ect, all insulating the floor you restrict heat output, you my say yes but once all these items are heated the room will become warm yes put now we are becoming less efficient and once you say OK room is correct temperature is can take ages for these rooms to respond to temperature adjustment, often resulting in over heating
This is why often we often mix and match, smaller areas radiators ,larger areas under floor heating, use the best of both worlds’ large kitchen/dinner/conservatory areas under floor heating, smaller rooms, bedrooms use radiators
As far as purchasing under floor heating you do not have to go over the top, on mine I just purchased 50m roll on plastic heating pipe and ran it up and down clipping as required, you can buy a mat if you wish that holds the pipe in place and then fitted a motorised valve on the flow and a gate valve for restricting flow/Balancing, linked to a room thermostat for the area, I have two areas, the bathroom and the conservatory done this way
40% less time to install under floor heating, I don’t think so, maybe the other way round
And before you all start on me the bathroom thermostat is sealed and low voltage that operated a relay to open and shut valve