You can't go wrong with the Electro-Voice RE20 it's been a mainstay in radio and voice-over work since pretty much it was released back at the end of the 60's. I've not really played around with the RE27 but I've never heard anything bad about it. When it comes to voice work professionally I think my go-to's would be the Shure SM7B or the EV RE20 though the SM7B is more versatile than the RE20. But to be honest the Electro-Voice RE20 just looks better and my reason for choosing it for my shack is because it just fits the look I wanted. I wouldn't of bought it for amateur radio but since I had it I thought why not give it a go. My initial go is going to just try hooking up straight to the radio and use the controls inside the Yaesu FTdx-101MP if that doesn't pan out I will try using the dBx 286s in front of the radio since I have a few of those. Failing that I might just get the Yaesu M-1 microphone or the M-100 and be done with it. I don't think you can go wrong with either of those.