Should I upgrade to the Theta casablanca III HD

I have had a CB3 for several years as the initial hub of a newbie high end system. I was told it was the best pre/pro for audio. I have since moved on to a proper preamp and use unity gain through it for theater applications. I don't watch movies often, but when I do I want them to sound and look first rate. On the flip side, I am not criticizing black levels, etc. I have been waiting patiently and have finally come up in line for the upgrade to the CB3 to have it converted to HDMI so I can get BluRay and I assume better sound. However, the upgrade price is nearly $7000. I'm starting to wonder if I should buy a prepro in the $7000 range (anthem D2V, Arcam av888) and sell the Theta. Or even invest in another contender even if it is more expensive. The Theta may sound good, but doesn't have room correction (I have a highly treated room that sounds pretty good anyway). I ultimately wonder how much difference I will notice using a prepro for movies only. I need to make a decision on this fairly quickly. Thanks for the advice in advance.

Current system Wilson Alexandria 2, Wilson center, Boulder 2010 pre, Boulder 2060 amp, a pair of JL