I have been making enlarged negatives for gum printing and recently tried the new Arista film and the Photowarehouse litho film and there direct negative X-ray copy film. I have tried the inter-positive method with standard litho film and was not happy with the loss of mid-tones. I also dabbled in negative by reversal found here: http://unblinkingeye.com/Articles/NbyR/nbyr.html and I really have to give this method another try.
I was not happy with the lack of contrast that I was getting with the X-ray copy film.

I am thinking of going over to the dark side and making digital negatives, but I am not sure where to start with that. I have dabbled in inkjet printing, but always felt that I could get better prints the traditional way as I have a darkroom that is B&W and Color capable. If I were to get a printer such as the Epson 1400 I could devote it to making enlarged negatives and possibly B&W prints. I have read a bit about the Piezography method of Jon Cone and was wondering what members may think of this method for a dedicated printer?

I guess what I would like to know is what method you use for making enlarged negatives and where on the web I might be able to get some information on making enlarged negatives?