I have a standard horizon handheld and am happy with it. They omitted a place for a lanyard which is my only complaint. It is well built and the battery goes the distance. It's been submerged and still works great. I would think you'd be happy with Std. Horizon.
DSC is nice because, if connected to a GPS, it will transmit your GPS position along with your communication so that rescuers will know your location. Supposedly these DSC communications are monitored by commercial vessels as well as the USCG. You can read more about it here:
Digital Selective Calling Radios - Nautical Know How
Most units now have DSC (even on the low end) so it's not a tough decision
That unit you linked to looks pretty nice. Not sure I helped, but I tried!