Panasonic AJ-D95 deck w/firewire and SDI. Very reasonable rates. If memory serves, $150 /day, 4 day week rental rate, the next week was 3 day week rental rate.
Also keep in mind that the audio in on the DVX-100 has no built-in attenuation. When there is loud sound going into the camera, particularly at high frequencies, the audio will break up. I found this out the hard way when recording high-pitched “Lu” singing in Tibet. When I figured out that it was an attenuation problem, and that the closet place to buy an external attenuator was 5,000 miles away, I made sure that everything I recorded went through my mixer (I was hoping to get away without having to drag it around and draw attention to us shooting). Setting the mixer to -20dB did the trick. So I would suggest that you set your Shure mixer as well.
When I got home, I picked up an Audio Technica model at B&H for $43 bucks:
I would suggest that anyone using the DVX-100 keep this in their camera bag. It seems that Panasonic is the only manufacturer that considers attenuation a “feature.”