Lune, BTW, something else I noticed between some of the ROM's. The 28205 ROM's have a change to Sync which the 28011 ROM's did not. The 28205 ROM no longer has the option to manually sync whereas the 28011 can be sync manually.
What I mean is this, if you goto Activesync, then click the Menu followed by Schedule, You will see the two options Peak Times and Off-Peak Times. The 28011 ROM has an option for Manual whereas the 28205 version no longer has that option. So in 28205 you conserve the most battery, you have to set both options to 4 hours whereas in 28011 you can set these as Manual so it only syncs when you tell it to sync.
Unfortunately, I didn't check this on the 23518 ROM, so I don't know if it follows 28011 or 28205.