Sadly, since the Ohio MARCS is a Motorola system you'll only be able to look at either them or EF Johnson for radios. I know of a group on MARCS who use EFJs, but I don't know what they think of them. If your department is seriously considering them I can try to put you in touch with someone from this group. I have heard from other users who tried the EFJs on an analog system and were unimpressed with their performance overall and had serious concerns about their reliability in decoding the control channel data. There isn't much to say about the Motorola radios other than if you've got the money, they are the clear choice. I've had experience with XTS3000s, XTS5000s, Astro Spectras, and XTL5000s, all of which work just fine. The 3000s and Astro Spectras haven't been in production for a while; you'll get an XTS/XTL-5000, -2500, or -1500, depending on exactly what features you need.