Since getting my Galaxy Tab, I find that I have no desire to read on any other device. My HTC EVO 4G has suddenly become too small (imagine that) and my PC too restrictive as I can't carry it around, e.g. to the bathroom or the layback chair or to bed. So my need for a sync feature has gone away.
Thanks for the effort in any case delvorak, I still think WhisperSync is the best part of Kindle. If it only would work with side loaded books.