First a question, how is your antenna fed? That is, the connection from the radio to the antenna itself? Please be as precise as possible.
Some random notes:
Beverage antennas are directional towards the far end of the antenna, provided the antenna length is terminated and large relative to the wavelength (at least one wavelength, ideally longer) At 415 kHz, this is not the case for a 500 ft Beverage so I would not expect it to be directional, at least in that way. It probably has a nice assortment of lobes and nulls however.
Unterminated, the Beverage will also pick up in the opposite direction (but see above for the length/wavelength relationship)
Normally a Beverage is run about 6 ft above the ground. At 14 ft, that is going to change things.
Beverages are considered high directivity / Signal to Noise ratio antennas. You're not looking for just more signal, which is not meaningful. You're looking for a better signal to noise ratio, so I'd compare that way.
Check up on the higher bands, say 4 to 10 MHz, and see how the two antennas compare, especially with stations located in the beam of the Beverage/not really a Beverage antenna.