Subjective judgment, they're fairly comparable -- digital readout, analog tuner. I think the Grundig sounds marginally better and the GP-4L's FM is mono even w/ headset if that's an issue. For an emergency standby radio, the 150 hr runtime of CountyComm's GP-4L is very good; I haven't seen runtime numbers for the Grundig but I'd guess they're similar. Both the GP-4L and the Grundig have has seven SW bands but without phase lock SW is too drifty IMO. If all you want is AM then the either should be fine.
The CountyComm GP-4L is slightly smaller, mostly due to an antenna which sticks out from the Grundig but is really long when it telescopes out, so that can be good or bad depending on if you need that long antenna.
Recommendation: If you want AM and FM stereo (assuming you don't mind earbuds or a headset) get the Grundig because it has an FM stereo output. If all you need is AM get the CountyComm GP-4L because it's smaller. If you want to listen to shortwave, skip these two and get something with a digital phase locked tuner. $.02
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Better is the Enemy of Good Enough.
Okay, what’s your point??