True, The ADI AR-146, 147, 247, and the 447 all have 5 buttons. Depending on the different Kenwood versions, some of them have only 5 buttons, but you’re correct.
I think we can eliminate those Kenwood models that have 6 buttons. Some say they're basically the same radio inside, but with different button styles and faceplate logos. Regardless, it’s all a conjecture as to frequency range of that particular radio. I’d buy any of them if the price was next to nothing. Mainly because I dislike multi-functional mics and the crazy amount of pin connections it supports. That’s just me…, but the buyer needs to be prepared to find a mic for that radio and possibly make his own cord connections to boot.