I hate to say it but 10 minutes isn't bad. I've seen 15-18 minutes within an hour of rush hour.

I used to commute from the near Virginia suburbs to 4000 Wisconsin Ave. by bus and it was 50-75 minutes each way for a trip that was about 10 miles. The best part is when I went to take the bus home, I'd wait at the stop for 30-40 minutes and then see 3 buses (which are supposed to run every 10-15 min) all pull up bumper to bumper.

I'll take a 10 minute metro wait any day.