Important to me was that I get a phone with good reception properties and reasonable software and smartphone-like properties and especially with free Navi. All this brings with the 5230. You can use the Navi in offline mode for free. The cards are up to date and available on the OVI store for almost all countries. As for me, Nokia always thrilled (and I am the last few years users from other manufacturers) is the very good reception quality. I do not know, what technique installed Nokia, but with my Nikoahandys I even received there where other manufacturers phones have no or only weak reception.
The only drawback: the battery lasts in normal operation (ie without Internet or Bluetooth thereabouts for 2 days but is bearable..
Conclusion: the current price an absolute bargain with a very good price / performance ratio (even considering the perhaps not ertstligareifen battery power). One has to just be aware of what you want and for what purposes are used this phone. Please no Verlgeiche with iPhone, HTC or Samsung Galaxy III! Otherwise verlgeicht you like other Rezessoren here apples and pears! Alone because of the good reception quality and the otherwise good applications and good software, I'm really busy thinking to use this phone even in continuous operation and not only as a substitute. Thus, absolute buy recommendation.