Just bought the Grundig G6 Aviator. So far I like this radio. At the
store, I told the salesman that I wanted to see three of them with
fresh batteries and compare reception. One was definitetely a bit
better in reception so I bought that one.
It comes down to how well you take care of your electronics.
And that is why a few of us here have radios that we have owned for
years still working fine. Like my Panasonic RF2200and my Sony
ICF-7600D (ICF-2002) that I have had since the early 1980's
If you find a good protective case for them, don't knock them
around, keep them clean, they should last for a great many years.

Even my Kaito KA1102 was purchased when they first came out and is
still like brand new after five years.
ON Ebay you can find replacement antennas for many radios. I
purchased a spare KA1102 antenna and a spare KA11 antenna just to keep
in their cases with them.

The secret is taking really good care of them. Sure, the odd bad
one can sneak past quality control inspection, but they should be
rare. That's why we have warrantys.