Wouldn't this be a possible option? It's even by the perfectspace vendor.

http://www.voxengo.com/product/boogex/
 
Haven't used it though.

Have you tried the IR cabinet in TH2 Producer? Like REMatrix Solo, the IRs must be imported into the plug-in. Unlike REMatrix Solo, the IRs can be organized into groups.

First hit when searching for "ir vst cabinet"
NadIR - A Free Impluse Response Loader Released by Ignite Amps. I recall trying some of the plug-ins a while back. They were OK. Don't remember this one though.

jimkleban
Good input.  I couldn't find ReMatrix so I looked it up.  It appears to be part of PRO CHANNEL which I NEVER use (as a matter of fact, I wish there was a way to not include it in the base product).

ReMatrix Solo is part of ProChannel, but if you upgrade to the full version ReMatrix, it's just a standard VST.
 
That said, the upgrade ain't cheap ($189 in the CW store).
 
There was a group buy last September where the full version went for $99.   They might do it again, so maybe keep your eyes peeled for that.
 
There's also Reverberate 2, which costs about $116 USD (80 GBP).

The full REmatrix is what you want.  Great reverb, convolution and algorithmic.

+1    Melda Mmultibandconvolution    (get it when on sale, if you want it)

The Manny Marroquin reverb from Waves is a convolution reverb that sounds terrific.  I got it when it was on sale for $29, though it normally costs $99.  You can use your own IR's with this if you don't like what's offered.

John
I have found Melda Mmultibandconvolution to be a good replacement for Perfect Space. One big advantage is its true stereo. Perfect Space wasn't. Another feature is it can use any IR simply and easily. Its highly configurable.  

bought that last year, opens up all sorts of possibilities, excellent plug-in

So, I found and tried RE Matrix solo in the pro channel (I really didn't know it was in there) and it worked like a champ for my Amp/Mic combo IRs. For more sophisticated and true stereo IRs, I still use the old trusty Altiverb 7.  The nice thing about AV7 is that they also create quite the library of unique IRs which are included with your license (and they are constantly releasing more and more of these).
 
The even have a series of famous studio IRs (usually, the big room, the drum room and the control room). As well as famous live venues from Opera houses to rock clubs.
 
It is quite the tool.
 
Thanks again for teaching me about Re Matrix, it was all I needed for the guitar cab IRs I like to use.
 
Jim