I have done both many times. I like the sus for eod inject it works great do to the fast act in it. If I am running just 2 shots a week I will do the enathate works way better for me keeps everything level longer. There was a studied done that says that sus drops quicker and you keep less of a blood peak through out the week the, enathate was shown to stay more stable. If I can find it I will post it.