I was looking for a new wireless AP/router and I was interested with 2 different models. They are both wireless N at 2.4 Ghz and up to 300Mbps. the difference is that one has 3x 5dBi omni-directional antennas, while the other one has 2x 7dBi omni-directional antennas. my question is which of the two has a better signal strength or longer range for wifi?