I am very impressed with iBooks quick rendering speed with PDFs on the retina display. But one feature I would love to have is continuous vertical scrolling. I was surprised to find this feature available in the safari browser when I opened a PDF through a web link. Safari handles high res PDFs beautifully with smooth vertical scrolling and horizontal lock. It is a shame we can't use the browser for files located on the iPad. Are there any PDF readers that can replicate the safari PDF reading experience?