My PL-660 failed after a maybe a couple of months of moderate use as a bedside HF radio. :/ I am still undecided on a replacement.
Addressing some flaws in the Tecsun PL-660, Robert writes:
The audio quality of the PL-660 was the biggest positive for me, as I was replacing a Sony 7600GR. Performance wise on the receiver side, both radios seemed about the same for HF reception, though I had modified the sync circuit in the 7600GR, so....
As much as it pains me to give Grundig any more of my money, which is a topic for another discussion, I am thinking a Grundig G3 might be in my future.