There are other brands, as well, which you have discovered in your research; but all are either the timed-type or the demand(remote controlled) type. You have correctly stated the advantages and disadvantages of each.
I would say that if you are in a cold area and are NOT able to access and insulate most of the hot piping, I might lean towards the demand-type just from the energy cost. A timed recirc. will have more energy cost due to heat loss.