Windows 7: Sync Toy vs SkyDrive

I have a question regarding sync files between my desktop and notebook, and using other devices.
I have been using SyncToy for quite a while, with fairly good results. Sometimes though I seem to get edits (deletions and overwrites) that I really do not want. Is there a better solution for syncing large amounts of files?
I am starting to try out using SkyDrive, but I’m not totally comfortable with putting sensitive documents online, also I often use my notebook without any internet access and I would like to be able to have a local copy available.
Optimally I would like to be able to have a master drive that both desktop and notebook sync their local versions to. I believe this is possible, but I am not sure how to set it up through windows.
What kind of options are there for doing this?

Depending on your versions of Windows 7, the OS can do this natively for you. On your PC, set up a shared folder that you can access from your laptop when connected to the network. Then, on your laptop, right-click the shared folder and select "always available offline".

See here for more info: Offline Files - Enable or Disable the Use Of

gudzilla.you should be ok as your spec says ultimate

I have another question regarding offline files. How can I tell how much space the offline files are taking on the C drive? I set up my laptop/netbook with an SSD and I only want to sync the most critical files. I want to see how much space is taken on the drive so I can manage which offline files to include.
Also, if I am away from my home network, and I connect to say a WiFi hotspot, will the offline files sync with the network folders? And if I set up these folders as a library, will they be available when I connect remotely. I used my homegroup as the path to the network folders.