Friends, this thread ends in the wrong category. I'll get the ZenFone in a couple of days. Hope it will work ok. I found one for a fair price, the 4 GB version. I think there are more 3 GB models out in the used market. It also seems to be a rare device here in Europe. In the end this monster battery and the memory card slot make the difference for me. And of course the FM radio. Hope the FM app will support this device some day.
Thanks MrT10001 for bringing the ZenFone back in my mind.