Hi,
In addition to 5-0, try:
Scanner911
Em.RadioFree (Emergency Radio Free)
Em.RadioFree I like because it tells you what feeds are up, at a glance, whereas the others you have to click on a feed in order to see whether it is online or not.
As for dropouts, I reckon that could be more a problem with the Internet or the feed itself, as opposed to the app.
My experience is with an Apple iPhone 4s, so I can't say for sure if my suggestions are available on Android phones.
Enjoy!
Jim