I Officially Joined the Family

[natetg57]

I have Sierra-2s across the front (soon to be EX's!) and Luna's on the side. I love the way it all blends for multi-channel music. I'm using HTM-200s in a similar position that you described, at the top of the back wall, about 5 ft behind my listening position. They are set up as 'rear ceiling' speakers for Atmos. (the front ceiling speakers are cheap Polks but that's just because they were easy to ceiling mount in an apartment)

I think getting Luna's for side surrounds makes sense. the HTM-200s would be fine imo as back surrounds. I think our backwards hearing is a little lesser discerning than to the front or side..