These are all decent products, and it will come down to personal taste. As long as price is close, just trust your ears. If you can't go listen to them, that's another story.
Personally, I think the Totems and the Proacs are the best of this bunch for music, but my opinion shouldn't sway you. Arcam & Proac is particularly synergistic.
For movies, make sure you have a good subwoofer, because most of these little guys aren't an ideal match for bombs bursting, if that matters to you.
Although I'm sure others will disagree, in my experience, Soliloquys don't sound so good with solid state amps. Very nice w/tubes, but that isn't too practical for HT.