Room Correction Devices PARC or TacT???

Is anyone using a room correction device? I was wondering if you have comapred or heard any and what you thoughts were. I have a friend who swears by the PARC unit.

Thanks and Happy Listening.
I've only heard good things about the PARC, as where I have heard mixed reviews on the TacT- fwiw. I don't have any experience with either just passing on what has been shared with me.
They are two very different devices. The PARC is an analog bass EQ system. In concept it is similar to the Infinity RABOS or the EQ function Vandersteen uses in their Model 5 speakers. These devices can successfully remove room induced bass frequency "humps" which not only smoothes out the bass response, but also provides for increased transparency through the midrange. The TACT is a digital device which works over the entire frequency spectrum and not only corrects frequency irregularities, but also corrects for some time anomalies. The TACT is a more ambitious device than the PARC and it is clearly more complex to setup and use. The TACT has a very steep learning curve.

Either the TACT or PARC can affect a small miracle in a well setup system. If you system is analog based, then the PARC makes more sense. However, if you have a digital setup and are willing to take the time and effort to properly configure it, then the TACT can do what the PARC does and more. Like any EQ devices, if not used properly they will seriously screw up the sound of your system. I've been using a TACT for close to 2 years.
I thoroughly enjoy the benefit of my Tact RCS 2.0. It has a terrible user-interface and manual, but when you get it working it is really great. No experience with other products of the same function, but highly recommend a product of this type in your system.
My first venture into room correction devices was an ashly parametric EQ.Circa 1975.I found it at a pro audio store used and beat to crap for 50.00.It had seen about twenty years of road use.The thing was magic.It was easy to use and the guys at the store (repair tech)helped me learn about such things.Five years later I gave the Ashly to a friend and spent a whompping 109.00 on a Behringer 1124p, digital EQ.Much more involved reading and setup but to notch out the nasties this thing rules.For the mains it is a whole different story.I have yet to interupt the signal path of my mains but the day is coming.Play around with room treatments and tube traps and placement before you delve into a piece of gear to correct the mains.Listen to these guys on this stuff, I am and I'm getting closer to a purchase.