Here are the test results for a PDF Magazine requested in
this thread.
This particular PDF is formatted in 3 columns and looks much better with conversion from Amazon or MobiPocket Creator (they look the same to me) than it does with PDFRead.
One thing I noticed on both the Amazon and MPC conversions. Some of the light colored text from the PDF comes out very light and barely readable in the conversions.
I've included the original PDF as well and the .prc files created by MPC and PDFR.
Edit: Removed original source material due to copyright concerns.