I've had my SL-C860 since ... 2003 (I think) but only pressed it into service when my Psion 3C failed in 2005. I've run the standard Sharp ROM all this time, occasionally thinking of trying one of the alternatives. I've just taken the plunge and blown Cacko 1.23 - brilliant!
Also got 512MB SD, Audiovox GPRS, Symbol Spectrum WiFi, Ethernet ... and some other stuff I've forgotten.
All for now,
Richard