OK, I got 115,200 to work and did get a speed increase. Unfortunatly I forgot my ePods at work today so I can't post directions on how to do it until tomorrow. I did have some problems getting them to sync the first time but got through it.
Details on speed increase:
File size: 4,046,952 bytes as reported by Windows ME or 3,962 KB
File transfer time at 19,200 was about 49 minutes 20 seconds
File transfer time at 115,200 was about 8 minutes 25 seconds
This is darn close to the 6 times speed increase I thought I would see. I account for any variance in the 6 times speed increase as data transfer errors. Maybe also the fact that I measured the time with my wrist watch but the first reason sounds better. :)
No file conversion was done by activesync and I transfer the file to my "Storage Card" both times. The card is a SanDisk 32 MB compact flash. I did transfer it into a directory one time(19,200) and just into the root of the flash the other(115,200.)
With minimum times to transfer the file at 115,200 without any overhead (error correction etc...) at about 5 minutes 51 seconds I think these times seam reasonable.