I have tried two different antennas for Digital TV reception. One cost me only $2 at a yard sale. One was far superior in rejecting interference and in reducing the number of drop outs.
Would you believe that the older antenna in the bottom picture did a much better job of rejecting interference like that of a train going by and in reducing dropouts? The four "bow tie" design is by far the best antenna for modern digital TV reception. The other antenna designs like the one in the top picture feature VHF reception and that is only needed for FM radio these days. The older bow tie type of antennas are also not nearly as directional so you usually do not even need an antenna rotor to get a good picture.
So save yourself some money and get one of the old antennas!