I have upgraded from a ICOM IC-735 with ICOM antenna tuner and matching power supply to a Kenwood TS-590. For my antenna I have changed from the old AEA Iso-Loop to a Buddipole dipole.
With the TS-590's internal tuner I can work 10-30 meters when the dipole is set up for 15 meters.
The DSP filters and overall listening experience is vastly better than the ICOM 735 which still works fine but does not have the filter capability of a modern rig. My IC-735 is 30 years old. The second HF rig I owned. The first being a Heathkit Comanche and Cheyenne.