Well my dear friends the problem is sol.....d out. Went today to the shop after work only to see empty space where 650 used to be. Not even the one to fiddle with anymore. Oh well. Anyway it's kind of bitter sweet feeling as on one hand I'd love to have it - would have been my preferred ereader (but for the font problem) but as I said I couldn't really justify spending 235 euro.
If they pop up at a lower price I will get one. On a positive note I found (which I thought I lost) guarantee card for my dead Netronix thingy, which is still valid. I will try to get money back and if I succeed I'll invest it in Sony.
Delphin, many thanks again for taking time to answer my questions! I will save the answers for future reference