Sorry to say but most "mass market" speakers and audio equipment have meaningless specs attached to them. The "maximum" power ratings on a speaker just mean that sustained operation at that power level will either sound like *rap because of high distortion, or literally overheat the speaker coil and burn it out. I've done that with top-brand high quality audio equipment, simply because the tone I was feeding them with unusually high frequency and power, and they overheated and burned out very quickly. (Like in a minute or two.)
Yaesu says yours radio puts out 3W of audio power, but that doesn't say what frequency range or at what distortion levels. Odds are you won't be putting the volume knob on "10" very often, so the odds re you wouldn't be putting 3W into the speaker.
What you don't know--and again most manufacturers won't say--is the efficiency rating of the speaker. I can feed a 20W signal into two different speakers, and if one is twice as efficient as the other (which will make it more expensive) that same 20W will sound twice as loud on one as it does on the other.
You just don't have that information, so all the rest is something of a crapshoot. You won't overload or damage either speaker, but there's no certain way to know which will sound louder, or clearer, or whatever you'd call "better". That truckstop brand might be perfectly good, I've never met them. And there are certainly brand names that are simply overpriced.
All you can do is buy a brand that you have some faith in, with a good return option. Or, roll the dice.
