I have given some thought to purchasing a digital broadcast radio as well. I've done little research beyond that. Only reason for digital - AM broadcast stations offer poor or noisy reception in small or large office settings. FM broadcast is ok but the program material on AM is what I prefer at times.
I'd be concerned that whatever I purchase is the standard - that will not become obsolete quickly. I would expect the same of my next television and expect that some aspects of television standards have still not been settled. It might only take a bit of research for me to alleviate my worries. One of these days I'll do that research.
I could take a trip to a large electronics retailer and learn a lot - especially if I find a part time EE student who can help me bridge the gap between the real technology and the consumer terms.