The literature only goes up to 16GB. Also, I'm wondering if 133x is truly fast enough.

Thanks,
Eric

Yes see http://www.dvinfo.net/forum/sony-hvr-mrc1k-cf-card-recorder/142031-hvr-mrc1-32gb-card.html

I'd only use 400x cards though

been using transcend 32gb 133x for over a year,

no problems

Many threads on this already, both here and in the MRC forum.