I have owned Totem and they were great sounding on any type of music. I have only heard SF for demos, but I found them too 'polite' for rock or rap, sounded great with classical. So I agree with @marakanetz. Just an opinion on what I've personally heard, not trying to start an argument.
I owed Rotel a while back, either amp would be fine, but most would say a little extra power never hurts. If you plan on getting a sub, then you can go with the 1070 (I'd recommend a sub with any speaker regardless), otherwise I'd go with the 1080.
Hope this helps.