I got a couple of these FM-1s and they are very sturdy. I've taken them in planes, trains and automobiles, packed into various bags and suitcases and they still work fine after a couple months of abuse. I just pick a random firmware, bring wired headphones, charge the battery and then just jam for hours during my trip and it's always a great adventure. 50 euro + 10 euro shipping + unlimited easy-to-install firmware choices is unbeatable.