Question for my plug-in-aholic pals working on PC...

A couple more to add to the list: Dynamic Spectrum Mapper ($329) and Meldaproduction's MAutoEqualizer ($204, occasionally on sale for 50%).
 
MAutoDynamicEQ is the best of the lot, IMO. It's the only one that features dynamic equalization (DSM is actually a spectral compressor).
 
Ozone's spectrum matching is equally capable and has the advantage of being able to display or apply 8 different curves. However, it's a little clumsy to use and too CPU-heavy for use on multiple tracks (there are lots of scenarios for spectrum matching besides full mixes).

If the three-digit price tags are putting you off, you can either wait for a Meldaproduction half-price sale (MAutoDynamicEQ has been offered at half price twice so far this year) or give Voxengo's CurveEQ a try. CurveEQ is cheaper ($89) than any other spectrum-matching equalizer I know of. While not the equal of MAutoDynamicEQ in either features or ease of use, it is a less-expensive alternative.
 
An even cheaper ($50) option is to use Voxengo's SPAN Plus, a multi-channel metering tool, and manually adjust your favorite EQ based on visual guidance provided by SPAN Plus.
 
The free option is to painstakingly match EQ by ear, using exclusive solo to A/B your mix against a reference you've loaded into your project. The free version of SPAN can help with this. It's a viable alternative; before the advent of spectrum-matching equalizers it was the only method.
 
There is a new product out called Euphonia (79 EUR). Its author has kindly provided me with a copy for review, but at present I don't yet know enough about it to make a yea-or-nay recommendation. But it does look interesting.
 
If anybody knows of other spectrum-matching equalizers, please let me know. I'm just finishing up my article on spectrum matching for the July issue of SoundBytes, which includes a list of plugins that can do this. I want to make the list is as comprehensive as possible.