Very large room HT

I would go for an amp with roomcorrection.

"Depth?"..are you kidding me?! Um, depth isn't how cinema recordings are mixed. I got news for ya'll! Try to uses some intentionally "deep" imaging loud speakers for movie duties, and you'll have a soundstage that's way to laid back and uninvolving for accurately reproducing the movie experience! At the best Imax and THX movie cinemas, I guarantee you, the presentation is not holographic, with super deep imaging, and sound staging. In fact, it's up front and immediate, with lots of presence. Soundstage depth is not part of the equation at the theater.
Movie/music loudspeakers need to be either near neutral or a bit forward in their presentation, if they're to have any chance of being effective as movie loudspeakers.
Once did a 5.1 channel Thiel 2.3/Krell HT system set up in my home briefly. was the most boring HT system I remember having! (granted, it was very clear with great detail).
Do yourselves a favor...USE THE KIND OF GEAR THE PROFESSIONAL AV REVIEWERS USE IN THEIR SYSTEM! - no brainer

MOST SPEAKERS USE CROSSOVERS WHICH CANNOT GIVE DEPTH. I AM IN THIS BUSINESS FOR OVER 15 YEARS AND TESTED MANY SPEAKERS IF THEY ARE 2 OR 3-DIMENSIONAL. LIKE MOST SURROUND AMP IN THE MID LEVEL PRICES ARE ALL 2-DIMENSIONAL. THX DOE NOT SAY ANYTHING ABOUT THE PROPERTIES OF AMPS LIKE DEPTH AND WIDE. FORWARD MEANS 2-DIMENSIONAL. THE BEST HIGHEND SPEAKERS PLACE THE IMAGE FAR BEHIND THE SPEAKERS. WENN YOU US SPEAKERS FOR AV WHICH CAN GIVE AN EXTREME DEEP AND WIDE STAGE YOU GET THE MOST STUNNING IMAGE POSSIBLE EVEN FOR MULTI CHANNEL USE. IT IS THAT SIMPLE!

Oh, boy, here we go!

:-)

Yeeeeaaaah,..I think we should just go around to all the local movie theaters and try to convince these companies that own them to throw out all their otherwise ineffective and crappy horn loudspeaker systems, and switch over to using Magnapans, B&W 801's, and Thiels instead! ..YEAH, NO! WWHAT A CRAPPY MOVIE EXPERIENCE THAT WOULD BE!!!

Im in the business since '96, fer now 17 years, and have worked in more AV stores, hi-end salons, and done more custom than most ever will (sold most every kind of ultra hi-end and midfi gear known to man, too, at one point)...and I'm here to tell you that your super deep holographic audiophile grade consumer loudspeakers and amp combo's WILL NOT REPLACE AN EFFECTIVELY WELL ENGINEERED HOME THEATER SYSTEM SETUP, FOR BEING EFFECTIVE AT REPRODUCING MOVIES!!!..period (But don't take my word for it...just take note of what all the highly regarded AV magazine reviewers use in their reference HT movies systems, and you'll quickly see speakers and electronics that ARE NOT super ESSOTERIC, DELICATE sounding, ULTIMATE AIR, SUPER HOLOGRAPHIC, AND UBER-WIDE SOUNDSTAGING AUDIOPHILE 2 CHANEL GEAR AND LOUDSPEAKRS, IN THEIR MULTICH HT SYSTEMS!!! - you do the math).
Again, THX spent decades and millions of dollars in R&D, perfecting what kind of equipment and setup would best reproduce the cinematic experience, and in the home. So who you gunna believe? Someone who's simply listened to different gear, or an industry that's won major awards, Oscars, and accolaids for it's accomplishments?
No brainer really.

btw, "A GOOD SPEAKER IS NOT A GOOD SPEAKER!"..just because someone else happens to think that it's a good speaker, for their limited application, taste or experience.