No one else has had a go, so I will try to help.
I use log shipping all the time. It is lightweight and works effectively. That said, I always roll my own - I don't use MS/3rd party tools for it.
Assuming you have full recovery model db and are backing up the transaction log anyway, the only overhead associated it copying the tlog backups off the server to somewhere else. If you aren't already backing up your transaction logs, then this may be a problem for you.
For what its worth I logship well over 40GB/Day over about 200 miles.