Been thinking about trying some digital radio stuff for a few years. I think there are some DSTAR repeaters in my area (Rochester, NY)? Been looking at the Icom ID-31A PLUS and ID-51A PLUS. Other than the addition of VHF, can someone explain the notable differences between them? Any features I might miss with the 31? I've had a couple Yaesu and Baofeng radios. Currently love my Kenwood TH-F6A, but want to play with the digital modes a bit in the HT world. Any other words of wisdom? Any features that are must-haves? Or things to stay away from? Thanks very much in advance p.s. Anyone have a link to a good FAQ that explains the big picture advantages of digital for amateur radio?