I had a 300 and it was pretty decent, but I’m not a fan of C4FM either, and the noisy relay on 70cm was distracting.The 400 did have a nice screen, I'll give it that. I ended up selling that to a friend of mine that wanted to do C4FM and hotspots and such. I'm not a fan of Yaesu's C4FM anyway, we've proven time and time again that other digital voice modes (especially D-star) will talk further with less signal and still be readable.
Had 2 100's sold both of those, and while still having the 300, I"m not a fan of it either. The first time I got to the highest channel I had in memory and it just stopped instead of looping back around to channel 1, I was done. It had pretty good specs on the service monitor on analog receive on both 2 meters and 70cm, however so I'll give it that. It sits in my spare room except for a couple of 'events' we have in the area which include their C4FM stuff. The only possible reason I'd ever consider a 500 it's faceplate has what I'm told is a usable speaker in it. I've yet to hear it personally, a buddy is gonna let me run one for a bit while he borrows something of mine so, we'll see. I seriously doubt I'll up the money for one however regardless of how that turns out.
I'm not holding my breath on the Kenwood, we'll see. I'm sure that's gonna be pricey. In the mean time at home, I'll just keep running my older Kenwood's which work just fine.
The Kenwood will be priced in the stratosphere. I’m not willing to pay $1,000 for a mobile FM.