All the mini dab radios need an earpiece I think. I always want one with external speaker. Nothing loud. Just so I can hear Talksport all day I love my radio. When I was trad I even tried taping one to my point, but often found I was too far away and didn't want it blasting, nor would the customers I doubt.
My mini Sony pocket radio packed up a couple of months ago. I was gutted at the time. It was great. It had a digital display and tuner and a little yellow lock button so it didn't change station or anything whilst in your pocket. It was a tad too quiet though.
I bought another Sony, slightly bigger, and it's been great. It takes two AA batteries as opposed to AAA so they last a lot longer. I did have to electrical tape the analogue dial in place so I didn't knock it off station getting it in and out of my pocket. That was a couple of months ago and it still hasn't moved. It's a shame the radio's not a bit lighter though. I'd be totally lost without it though.
I think it's definatley worth getting a branded one else the cheap one's I've tried start buzzing when you turn around etc. There's only a couple of places on my round that I get interference and have to turn it off. I think this is someone's old analogue telephone or something.