I have a Grundig Mini 300 AM/FM/SW-2xAA which is pretty darn sweet. I picked it up at Radio Shack for 30 bucks. Sound and volume is very good. The only real short coming (and this one really is) is that it's digital display with an analog tuner dial on the side, well, the knob is very sensitive. Just barely touch it and it goes flying up/down the dial.
The radio would be great if it had a lock feature like the smaller Sony [FONT=arial,sans-serif][SIZE=-1]SFR-M37V, for instance, (Which I also have. Weather band is so-so at times.) Another downside is that there is no local weather/civilian alert band. If Grundig addressed a couple of these shortcomings the radio would be an out of the park homerun in a pocket-sized radio. But until those issues are addressed, I just can't recommend it as an emergency radio. That sensitive knob really sets it back which is a shame. Antenna is REALLY long for a radio of this size too so be careful when retracting as not to bend it.
Next, I have the aforementioned [/SIZE][/FONT]Sony [FONT=arial,sans-serif][SIZE=-1]SFR-M37V
Reception is about average with Weather Band being quite weak at times, in this area at least. Not too bad for a personal solution overall. The downfall here is if you're with a group, there's no external speaker. It's a headphones only proposition outside of a pair of ipod external speakers or something similar attached to it, but that would be a bit too cumbersome for an on-the-go radio. Takes 1xAAA battery.
Next, I have a [/SIZE][/FONT]
Sony ICF-S10MK2 Pocket AM/FM Radio
Average/OK for a pocket radio. Shortcomings are there is no weather band and the speaker gets distorted with higher volume levels.
Another that you can't see from this picture is that the antenna, instead of telescoping inside into the unit, actually folds behind the unit instead and only swings out.
No swiveling and it could be exposed to some bumps and dings. That little metal nub you see at the top is where the screw is that attaches it to the body on the back of the unit. The upside to this radio is of course the analog dial which will offer you better battery life than the previous radios above that have digital display with a clock running. Also has a tune indicator as shown on the front in this picture. This would be an OK solution if you can count on AM and/or FM to give you all the necessary details in a local emergency where you live. I paid 10 for it from the Sonystyle website. They had free shipping at the time.
Takes 2xAA batteries.
Lastly, if you don't mind moving up to a power cord/4xAA battery solution, I just today picked up a Sony ICF-36.
AM/FM/TV/Weather. Keep in mind the TV channels won't work after the digital takeover in 2009. At least that's what I've heard anyways.
I've seen these priced for 70-99 bucks on the net. Why? I have no idea. Picked mine up at K-Mart for 25 bucks. Maybe I stumbled on a bargain. Weather band is OK. It's become my experience that the closer you are to a window with some of these weather band radios, the better the reception. FM sounds good and the speaker has decent volume. Only begins to distort towards the last quarter or so before reaching max volume. Haven't played with AM reception much yet so can't comment there. Also, there's not much in the way of local TV here so not picking up much on the TV bands other than a local station I already get on the FM band.
As mentioned, it has a built-in power cord or can take 4xAA batteries.
These are a few of the cheaper solutions out there. None are absolutely the be all end all solution, but doable.
I'll leave the more technical and pricey aspects of choices available out there to the real radio enthusiasts here.