LOL - that will be me then.
Yes, I think the incremental gain with Pro was worthwhile. But, as the other guys have pointed out, it is incremental. XT32 does a really, really good job. Pro takes that a step further in an automated way, making it pretty easy for anyone to use.
But it does cost $700. Since acquiring my Pro kit, I have treated my room with acoustic panels and also bought a calibrated mic and learned how to use it with REW. The gains in SQ that I have been able to make with the treatments and REW have far outweighed any benefits of using Pro IMO. But, of course, it is more work and the learning curve is steep and requires not insignificant amounts of study.
If I was to have the time over again, I would not buy Pro. I would buy a $100 mic, download REW (free) and learn how to use it to discover the problems in my room, and then apply treatments and take any other measures I can to fix any problems (eg speaker and sub placement etc). In fact, this is what I have done as I say. I feel that using the above approach and XT32 would be more than good. Add a dash of PEQ and I think I can do as good a job, or better, than Pro nowadays.
In fact, the more one can improve the room, the less one needs automated room correction of course. It is important, I think, to remember what Audyssey is: it is an automated RC system. As such is does a terrific job - better probably than anything else currently available at an affordable price. I think I would always run Audyssey (either Pro or XT32) after getting the room as good as I can simply because it will do the 'final cut' at correcting those anomalies left behind due to the compromises we all have to make.
So the question is: do you want the best available automated RC system you can get at an affordable price, which will do a terrific job for you with very little in the way of a learning curve to climb? Or do you want to use XT32 as the base and then go further into the rabbit hole with REW and treatments etc? As the man said, you pays your money and you takes your choice.
One final comment - here is a graph of mine showing a 'before' and 'after' of my room where all I did was move the L speaker about 12 inches to the left and the R speaker about 12 inches to the right, and move Sub 1 about a foot and Sub 2 about 3 feet. IOW, a totally FREE adjustment. It would not have been possible to make this adjustment without REW.
There is no automated RC system that can do that (nor do they say they can of course, to be fair). All I am trying to say is that the huge improvement you can see there far surpasses the difference Pro vs XT32 can make. And it was free.
This post is purely a personal opinion. It contains some heretical thoughts for this thread, so please take it for what it is. I am not saying Pro is a poor investment, nor that it doesn’t offer an improvement over XT32. I am just trying to give a different perspective based on my own experience and circumstances.
And to answer your question: yes, for movies only the improvements Pro made were worthwhile for me. Imaging was a little better, surround envelopment was better, bass a little tighter. But I have made much bigger improvements in all those areas by using REW and treatments and acoustic theory (helped by the exceptionally able AVS member Sanjay (sdurani) with speaker and sub placement and by many other incredibly helpful and knowledgeable guys in this thread (and others) who are too numerous to mention (you know who you are) and who have guided me along the path to audio nirvana these past few years.