The Wizards radio due of Dave Johnson and Glenn Consor (especially the latter with his tell-it-like-it-is style) on FM-99.1 is also pretty solid. Walton on the Caps radio broadcasts may be too much of a Screamy Mimi at times (like his predecessor Kolbe - and I still miss Ron Weber) but he is into the game and avoids excessive editorialising (and is preferable to the NBC NHL television coverage - but then again so is the sound of 10,000 sets of fingernails scratching 10,000 blackboards).
The only time I absolutely prefer the telly to the radio is for the Redskins - their radio broadcasts with Sonny and Sam remain one of the most effective soporifics available without a prescription. DC United even has decent radio broadcasts on FM-106.7 on non-Nats days but ideally one really needs the video there.
Nats? Charlie & Dave all the way - better on an intergalactic scale than both MASN and the RedSox/Cardinals/Dodgers/Yankees Game of the Week (d/b/a ESPN Sunday Night Baseball, both radio and telly versions).
As far as the non-match programming on FM-106.7, it's still usually at least a bit too Redskins-centric for my liking but, as noted in an earlier post, that's the market here (and in football/basketball seasons prime time can often get overly Virginia Tech- and Georgetown-centric - I don't follow colleges). If it gets that way I simply turn it off and switch over to my massive music collection - the power of personal choice is a good thing.