Syncing files with PC

One of the things I need on my tablet is the ability to sync files with (various) PC folders.

I've been using PCFileSync so far - it works well and is faurly easy to use, but has some shortcomings in my experience:

• Doesn't do a "proper sync".  ie it will copy files bi-directionally, but doesn't replicate deletes.  So if I have files on both tablet and PC and delete the one on the PC, next time I sync it will copy the file from the tablet back to the PC.
  So in my docs folder, for example, I have lots of ~temp files from word and can't (easily) get rid of them.
  
• Seems to have an issue with file date/times. For example, every time I start the program it (re)copies eveyrything in the folder.  I'm not sure if this is a feature of the software or something to do with the way Android (and SD card) handles file dates

So, I've started working on my own file sync program.  Features I want include:

1. Proper two-way sync, including deletes
2. Option to store files removed in a backup folder (on the PC)
3. Can detect different wifi networks and run different sync sets, eg I want to do one set of syncs at home and a different set when connected to work wifi.

So, it's going.  It does two way sync and can detect which wifi it is on and sync sets as appropriate.  It doesn't do sub-folders or backups yet and the UI is not very freindly.  But it's working and useful :-)