I'm restricted to putting antennas in my attic which is 50 feet long and peaks at about 8 feet. I'm currently using the Nelson UJM-150-50 end-fed dipole 80-10 meter antenna. The attic is about 25 feet above the ground. Would the MFJ (or other) magnetic loop antenna be better? Is there a better option?
Both an end-fed and a small loop antenna might couple into the house wiring on transmit. You might be able to orient a mag loop to minimize RF noise pickup from the house environment on receive.
As an alternative, I might consider testing a balanced fan dipole for Tx. For a receive antenna, another possibility might be a large loop around the entire attic, if the EMI/RFI pickup isn’t too bad.