Anything Else Than Canopus? Options

[macflymac]

I'm looking for an alternative to the Canopus ADVC110 that allows to play the Video on a third external monitor or TV . I've found some devices that have similar specs, but i can't figure out if it could work for an external display of the Video track.
Also, i'd like it to be able to play HD video, or at least more than DV pal shitty video.
I've seen the black magic cards:
http://www.blackmagicdesign.com/products/intensity/
But i'm not shure it would work for this.
If anyone has any lead on the kind of device that could work...

Thanks in advance.