I wish I could be able to advise you on how the two compare. I can vouch for a Procimena 1000 kit with Onkyo 609 setup.
Even with only a ProCenter 1000. It sounds great.
One thing to note is that receivers have the capabilties of accounting for different audio settings. i.e. All stereo, 3 channel, THX, High etc. You can also adjust the volumes on specific channels after your speakers break in, meaning yes the calibration at the start can be different tomorrow.
Then there are diagnostics like Auddessey that can optimize performance based on your specific room by accounting for distances you sit away from the speakers, speaker height, how wide apart or narrow your home theatre is.
If it's all about sound, I'd also note that most music is heard coming from the front, like going to a concert. Home theatre is an emersion of sound. So you shouldn't know specifically where the source is.
These are two different forms of listenting that I feel the DefTech procinema series are flexible enough to work around.
I bought the Procinema because of budget, asthetics (studio monitors look boxey) and performance.
Today, I just like the way the PM1000's look. The sound performance is treated as a given.