I'm guessing the 4248 performs better. I haven't seen any performance specs on the 3023, so this is a guess. But the 4248 uses folded dipoles ("bowties") for its director elements (the ones out in front). This should give it a gain and directionality edge over the 3023, which just uses simple elements.
The 4248 is very directional for an antenna its size. It's even more directional than the bigger Winegard UHF antenna, altough its gain is lower.
BTW, I ordered a 4248 cross-country, and paid as much in shipping as for the antenna! Later I found a local distributor on the Channel Master website, where I could just walk in and get one for no shipping charges. You may want to check on this before ordering one mail order.
You have a right to install OTA and dish antennas on property under your control.