My present antennas on HF are am 80m doublet for 160m to 30m. Its fed with 450 ohm slotted feeder into the shack. I used two waterproof plastics boxes, some fiberglass tubing and some brass rod to feed that cable through the house wall. A short length of the feeder then connect to the back of the balanced ATU.
On the higher bands, 20m through 10m I have 2 antennas currently. I have a Force 12 C3SS at about 10 meters above ground on a mast and below it I have a 17m Delta Loop. Both work very well and i have worked lots of DX using these antennas.